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Finding the Fourth Proportional to 6,488.80, 8,954.40 and 3,694.24

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Solution

The fourth proportional to 6,488.80, 8,954.40 and 3,694.24 is: 5,097.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,488.80 : 8,954.40 = 3,694.24 : x
  2. Step 2: Convert to fraction form
    6,488.80/8,954.40 = 3,694.24/x
  3. Step 3: Cross multiply
    6,488.80x = 8,954.40 × 3,694.24
  4. Step 4: Simplify right side
    6,488.80x = 33,079,702.66
  5. Step 5: Solve for x
    x = 33,079,702.66/6,488.80
  6. Step 6: Final answer
    x = 5,097.97

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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.