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Finding the Fourth Proportional to 7,489.80, 10,338.84 and 6,702.48

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Solution

The fourth proportional to 7,489.80, 10,338.84 and 6,702.48 is: 9,252.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.80 : 10,338.84 = 6,702.48 : x
  2. Step 2: Convert to fraction form
    7,489.80/10,338.84 = 6,702.48/x
  3. Step 3: Cross multiply
    7,489.80x = 10,338.84 × 6,702.48
  4. Step 4: Simplify right side
    7,489.80x = 69,295,868.32
  5. Step 5: Solve for x
    x = 69,295,868.32/7,489.80
  6. Step 6: Final answer
    x = 9,252.03

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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.