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Finding the Fourth Proportional to 8,290.71, 11,445.41 and 6,398.03

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Solution

The fourth proportional to 8,290.71, 11,445.41 and 6,398.03 is: 8,832.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.71 : 11,445.41 = 6,398.03 : x
  2. Step 2: Convert to fraction form
    8,290.71/11,445.41 = 6,398.03/x
  3. Step 3: Cross multiply
    8,290.71x = 11,445.41 × 6,398.03
  4. Step 4: Simplify right side
    8,290.71x = 73,228,121.15
  5. Step 5: Solve for x
    x = 73,228,121.15/8,290.71
  6. Step 6: Final answer
    x = 8,832.55

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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.