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Finding the Fourth Proportional to 8,700.43, 13,044.16 and 5,236.87

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Solution

The fourth proportional to 8,700.43, 13,044.16 and 5,236.87 is: 7,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.43 : 13,044.16 = 5,236.87 : x
  2. Step 2: Convert to fraction form
    8,700.43/13,044.16 = 5,236.87/x
  3. Step 3: Cross multiply
    8,700.43x = 13,044.16 × 5,236.87
  4. Step 4: Simplify right side
    8,700.43x = 68,310,570.18
  5. Step 5: Solve for x
    x = 68,310,570.18/8,700.43
  6. Step 6: Final answer
    x = 7,851.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.