Home / 9,140.76-12,614.94-5,163.12

Finding the Fourth Proportional to 9,140.76, 12,614.94 and 5,163.12

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Solution

The fourth proportional to 9,140.76, 12,614.94 and 5,163.12 is: 7,125.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.76 : 12,614.94 = 5,163.12 : x
  2. Step 2: Convert to fraction form
    9,140.76/12,614.94 = 5,163.12/x
  3. Step 3: Cross multiply
    9,140.76x = 12,614.94 × 5,163.12
  4. Step 4: Simplify right side
    9,140.76x = 65,132,449.01
  5. Step 5: Solve for x
    x = 65,132,449.01/9,140.76
  6. Step 6: Final answer
    x = 7,125.50

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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.