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Finding the Fourth Proportional to 6,473.88, 8,931.72 and 3,640.68

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Solution

The fourth proportional to 6,473.88, 8,931.72 and 3,640.68 is: 5,022.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,473.88 : 8,931.72 = 3,640.68 : x
  2. Step 2: Convert to fraction form
    6,473.88/8,931.72 = 3,640.68/x
  3. Step 3: Cross multiply
    6,473.88x = 8,931.72 × 3,640.68
  4. Step 4: Simplify right side
    6,473.88x = 32,517,534.37
  5. Step 5: Solve for x
    x = 32,517,534.37/6,473.88
  6. Step 6: Final answer
    x = 5,022.88

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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.