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Finding the Fourth Proportional to 8,937.66, 12,333.96 and 5,400.21

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Solution

The fourth proportional to 8,937.66, 12,333.96 and 5,400.21 is: 7,452.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,937.66 : 12,333.96 = 5,400.21 : x
  2. Step 2: Convert to fraction form
    8,937.66/12,333.96 = 5,400.21/x
  3. Step 3: Cross multiply
    8,937.66x = 12,333.96 × 5,400.21
  4. Step 4: Simplify right side
    8,937.66x = 66,605,974.13
  5. Step 5: Solve for x
    x = 66,605,974.13/8,937.66
  6. Step 6: Final answer
    x = 7,452.28

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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.