Home / 5,429.60-7,489.56-3,438.80

Finding the Fourth Proportional to 5,429.60, 7,489.56 and 3,438.80

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Solution

The fourth proportional to 5,429.60, 7,489.56 and 3,438.80 is: 4,743.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.60 : 7,489.56 = 3,438.80 : x
  2. Step 2: Convert to fraction form
    5,429.60/7,489.56 = 3,438.80/x
  3. Step 3: Cross multiply
    5,429.60x = 7,489.56 × 3,438.80
  4. Step 4: Simplify right side
    5,429.60x = 25,755,098.93
  5. Step 5: Solve for x
    x = 25,755,098.93/5,429.60
  6. Step 6: Final answer
    x = 4,743.46

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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.