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Finding the Fourth Proportional to 6,646.75, 9,891.65 and 6,425.28

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Solution

The fourth proportional to 6,646.75, 9,891.65 and 6,425.28 is: 9,562.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,646.75 : 9,891.65 = 6,425.28 : x
  2. Step 2: Convert to fraction form
    6,646.75/9,891.65 = 6,425.28/x
  3. Step 3: Cross multiply
    6,646.75x = 9,891.65 × 6,425.28
  4. Step 4: Simplify right side
    6,646.75x = 63,556,636.98
  5. Step 5: Solve for x
    x = 63,556,636.98/6,646.75
  6. Step 6: Final answer
    x = 9,562.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.