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Finding the Fourth Proportional to 9,787.76, 13,500.42 and 6,249.38

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Solution

The fourth proportional to 9,787.76, 13,500.42 and 6,249.38 is: 8,619.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,787.76 : 13,500.42 = 6,249.38 : x
  2. Step 2: Convert to fraction form
    9,787.76/13,500.42 = 6,249.38/x
  3. Step 3: Cross multiply
    9,787.76x = 13,500.42 × 6,249.38
  4. Step 4: Simplify right side
    9,787.76x = 84,369,254.74
  5. Step 5: Solve for x
    x = 84,369,254.74/9,787.76
  6. Step 6: Final answer
    x = 8,619.87

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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.