Home / 8,632.28-11,912.16-5,280.68

Finding the Fourth Proportional to 8,632.28, 11,912.16 and 5,280.68

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Solution

The fourth proportional to 8,632.28, 11,912.16 and 5,280.68 is: 7,287.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,632.28 : 11,912.16 = 5,280.68 : x
  2. Step 2: Convert to fraction form
    8,632.28/11,912.16 = 5,280.68/x
  3. Step 3: Cross multiply
    8,632.28x = 11,912.16 × 5,280.68
  4. Step 4: Simplify right side
    8,632.28x = 62,904,305.07
  5. Step 5: Solve for x
    x = 62,904,305.07/8,632.28
  6. Step 6: Final answer
    x = 7,287.10

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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.