Home / 8,224.40-12,336.60-7,130.90

Finding the Fourth Proportional to 8,224.40, 12,336.60 and 7,130.90

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Solution

The fourth proportional to 8,224.40, 12,336.60 and 7,130.90 is: 10,696.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,224.40 : 12,336.60 = 7,130.90 : x
  2. Step 2: Convert to fraction form
    8,224.40/12,336.60 = 7,130.90/x
  3. Step 3: Cross multiply
    8,224.40x = 12,336.60 × 7,130.90
  4. Step 4: Simplify right side
    8,224.40x = 87,971,060.94
  5. Step 5: Solve for x
    x = 87,971,060.94/8,224.40
  6. Step 6: Final answer
    x = 10,696.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.