Home / 5,388.75-7,432.29-3,398.58

Finding the Fourth Proportional to 5,388.75, 7,432.29 and 3,398.58

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Solution

The fourth proportional to 5,388.75, 7,432.29 and 3,398.58 is: 4,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.75 : 7,432.29 = 3,398.58 : x
  2. Step 2: Convert to fraction form
    5,388.75/7,432.29 = 3,398.58/x
  3. Step 3: Cross multiply
    5,388.75x = 7,432.29 × 3,398.58
  4. Step 4: Simplify right side
    5,388.75x = 25,259,232.15
  5. Step 5: Solve for x
    x = 25,259,232.15/5,388.75
  6. Step 6: Final answer
    x = 4,687.40

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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.