Home / 5,138.20-7,089.39-3,148.04

Finding the Fourth Proportional to 5,138.20, 7,089.39 and 3,148.04

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Solution

The fourth proportional to 5,138.20, 7,089.39 and 3,148.04 is: 4,343.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.20 : 7,089.39 = 3,148.04 : x
  2. Step 2: Convert to fraction form
    5,138.20/7,089.39 = 3,148.04/x
  3. Step 3: Cross multiply
    5,138.20x = 7,089.39 × 3,148.04
  4. Step 4: Simplify right side
    5,138.20x = 22,317,683.30
  5. Step 5: Solve for x
    x = 22,317,683.30/5,138.20
  6. Step 6: Final answer
    x = 4,343.48

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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.