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Finding the Fourth Proportional to 3,445.32, 5,167.92 and 980.16

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Solution

The fourth proportional to 3,445.32, 5,167.92 and 980.16 is: 1,470.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.32 : 5,167.92 = 980.16 : x
  2. Step 2: Convert to fraction form
    3,445.32/5,167.92 = 980.16/x
  3. Step 3: Cross multiply
    3,445.32x = 5,167.92 × 980.16
  4. Step 4: Simplify right side
    3,445.32x = 5,065,388.47
  5. Step 5: Solve for x
    x = 5,065,388.47/3,445.32
  6. Step 6: Final answer
    x = 1,470.22

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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.