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Finding the Fourth Proportional to 6,487.56, 8,954.82 and 4,391.64

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Solution

The fourth proportional to 6,487.56, 8,954.82 and 4,391.64 is: 6,061.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.56 : 8,954.82 = 4,391.64 : x
  2. Step 2: Convert to fraction form
    6,487.56/8,954.82 = 4,391.64/x
  3. Step 3: Cross multiply
    6,487.56x = 8,954.82 × 4,391.64
  4. Step 4: Simplify right side
    6,487.56x = 39,326,345.70
  5. Step 5: Solve for x
    x = 39,326,345.70/6,487.56
  6. Step 6: Final answer
    x = 6,061.81

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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.