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Finding the Fourth Proportional to 8,902.99, 12,287.29 and 5,126.31

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Solution

The fourth proportional to 8,902.99, 12,287.29 and 5,126.31 is: 7,074.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,902.99 : 12,287.29 = 5,126.31 : x
  2. Step 2: Convert to fraction form
    8,902.99/12,287.29 = 5,126.31/x
  3. Step 3: Cross multiply
    8,902.99x = 12,287.29 × 5,126.31
  4. Step 4: Simplify right side
    8,902.99x = 62,988,444.78
  5. Step 5: Solve for x
    x = 62,988,444.78/8,902.99
  6. Step 6: Final answer
    x = 7,074.98

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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.