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Finding the Fourth Proportional to 6,487.70, 8,953.45 and 3,654.81

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Solution

The fourth proportional to 6,487.70, 8,953.45 and 3,654.81 is: 5,043.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.70 : 8,953.45 = 3,654.81 : x
  2. Step 2: Convert to fraction form
    6,487.70/8,953.45 = 3,654.81/x
  3. Step 3: Cross multiply
    6,487.70x = 8,953.45 × 3,654.81
  4. Step 4: Simplify right side
    6,487.70x = 32,723,113.68
  5. Step 5: Solve for x
    x = 32,723,113.68/6,487.70
  6. Step 6: Final answer
    x = 5,043.87

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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.