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Finding the Fourth Proportional to 6,487.84, 8,951.76 and 4,393.12

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Solution

The fourth proportional to 6,487.84, 8,951.76 and 4,393.12 is: 6,061.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.84 : 8,951.76 = 4,393.12 : x
  2. Step 2: Convert to fraction form
    6,487.84/8,951.76 = 4,393.12/x
  3. Step 3: Cross multiply
    6,487.84x = 8,951.76 × 4,393.12
  4. Step 4: Simplify right side
    6,487.84x = 39,326,155.89
  5. Step 5: Solve for x
    x = 39,326,155.89/6,487.84
  6. Step 6: Final answer
    x = 6,061.52

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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.