Home / 8,316.76-11,475.12-5,170.72

Finding the Fourth Proportional to 8,316.76, 11,475.12 and 5,170.72

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Solution

The fourth proportional to 8,316.76, 11,475.12 and 5,170.72 is: 7,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.76 : 11,475.12 = 5,170.72 : x
  2. Step 2: Convert to fraction form
    8,316.76/11,475.12 = 5,170.72/x
  3. Step 3: Cross multiply
    8,316.76x = 11,475.12 × 5,170.72
  4. Step 4: Simplify right side
    8,316.76x = 59,334,632.49
  5. Step 5: Solve for x
    x = 59,334,632.49/8,316.76
  6. Step 6: Final answer
    x = 7,134.34

Related Problems

Find fourth proportional to 4,158.38, 5,737.56 and 2,585.36
Half scale
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Double scale
Find fourth proportional to 8,317.76, 11,476.50 and 5,171.72
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.