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Finding the Fourth Proportional to 6,513.89, 8,989.17 and 3,529.72

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Solution

The fourth proportional to 6,513.89, 8,989.17 and 3,529.72 is: 4,871.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,513.89 : 8,989.17 = 3,529.72 : x
  2. Step 2: Convert to fraction form
    6,513.89/8,989.17 = 3,529.72/x
  3. Step 3: Cross multiply
    6,513.89x = 8,989.17 × 3,529.72
  4. Step 4: Simplify right side
    6,513.89x = 31,729,253.13
  5. Step 5: Solve for x
    x = 31,729,253.13/6,513.89
  6. Step 6: Final answer
    x = 4,871.02

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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.