Home / 8,901.55-12,279.36-7,224.85

Finding the Fourth Proportional to 8,901.55, 12,279.36 and 7,224.85

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Solution

The fourth proportional to 8,901.55, 12,279.36 and 7,224.85 is: 9,966.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.55 : 12,279.36 = 7,224.85 : x
  2. Step 2: Convert to fraction form
    8,901.55/12,279.36 = 7,224.85/x
  3. Step 3: Cross multiply
    8,901.55x = 12,279.36 × 7,224.85
  4. Step 4: Simplify right side
    8,901.55x = 88,716,534.10
  5. Step 5: Solve for x
    x = 88,716,534.10/8,901.55
  6. Step 6: Final answer
    x = 9,966.41

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Half scale
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Double scale
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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.