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Finding the Fourth Proportional to 6,488.40, 8,954.24 and 3,656.90

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Solution

The fourth proportional to 6,488.40, 8,954.24 and 3,656.90 is: 5,046.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,488.40 : 8,954.24 = 3,656.90 : x
  2. Step 2: Convert to fraction form
    6,488.40/8,954.24 = 3,656.90/x
  3. Step 3: Cross multiply
    6,488.40x = 8,954.24 × 3,656.90
  4. Step 4: Simplify right side
    6,488.40x = 32,744,760.26
  5. Step 5: Solve for x
    x = 32,744,760.26/6,488.40
  6. Step 6: Final answer
    x = 5,046.66

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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.