Home / 8,312.76-11,469.60-5,166.72

Finding the Fourth Proportional to 8,312.76, 11,469.60 and 5,166.72

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Solution

The fourth proportional to 8,312.76, 11,469.60 and 5,166.72 is: 7,128.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312.76 : 11,469.60 = 5,166.72 : x
  2. Step 2: Convert to fraction form
    8,312.76/11,469.60 = 5,166.72/x
  3. Step 3: Cross multiply
    8,312.76x = 11,469.60 × 5,166.72
  4. Step 4: Simplify right side
    8,312.76x = 59,260,211.71
  5. Step 5: Solve for x
    x = 59,260,211.71/8,312.76
  6. Step 6: Final answer
    x = 7,128.83

Related Problems

Find fourth proportional to 4,156.38, 5,734.80 and 2,583.36
Half scale
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Double scale
Find fourth proportional to 8,313.76, 11,470.98 and 5,167.72
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.