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Finding the Fourth Proportional to 6,422.70, 9,634.05 and 6,374.10

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Solution

The fourth proportional to 6,422.70, 9,634.05 and 6,374.10 is: 9,561.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.70 : 9,634.05 = 6,374.10 : x
  2. Step 2: Convert to fraction form
    6,422.70/9,634.05 = 6,374.10/x
  3. Step 3: Cross multiply
    6,422.70x = 9,634.05 × 6,374.10
  4. Step 4: Simplify right side
    6,422.70x = 61,408,398.11
  5. Step 5: Solve for x
    x = 61,408,398.11/6,422.70
  6. Step 6: Final answer
    x = 9,561.15

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.