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Finding the Fourth Proportional to 6,398.56, 9,585.06 and 3,938.17

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Solution

The fourth proportional to 6,398.56, 9,585.06 and 3,938.17 is: 5,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,398.56 : 9,585.06 = 3,938.17 : x
  2. Step 2: Convert to fraction form
    6,398.56/9,585.06 = 3,938.17/x
  3. Step 3: Cross multiply
    6,398.56x = 9,585.06 × 3,938.17
  4. Step 4: Simplify right side
    6,398.56x = 37,747,595.74
  5. Step 5: Solve for x
    x = 37,747,595.74/6,398.56
  6. Step 6: Final answer
    x = 5,899.39

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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.