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Finding the Fourth Proportional to 8,697.43, 11,998.43 and 5,712.17

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Solution

The fourth proportional to 8,697.43, 11,998.43 and 5,712.17 is: 7,880.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,697.43 : 11,998.43 = 5,712.17 : x
  2. Step 2: Convert to fraction form
    8,697.43/11,998.43 = 5,712.17/x
  3. Step 3: Cross multiply
    8,697.43x = 11,998.43 × 5,712.17
  4. Step 4: Simplify right side
    8,697.43x = 68,537,072.25
  5. Step 5: Solve for x
    x = 68,537,072.25/8,697.43
  6. Step 6: Final answer
    x = 7,880.16

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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.