Home / 5,138.50-7,089.51-3,148.06

Finding the Fourth Proportional to 5,138.50, 7,089.51 and 3,148.06

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Solution

The fourth proportional to 5,138.50, 7,089.51 and 3,148.06 is: 4,343.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.50 : 7,089.51 = 3,148.06 : x
  2. Step 2: Convert to fraction form
    5,138.50/7,089.51 = 3,148.06/x
  3. Step 3: Cross multiply
    5,138.50x = 7,089.51 × 3,148.06
  4. Step 4: Simplify right side
    5,138.50x = 22,318,202.85
  5. Step 5: Solve for x
    x = 22,318,202.85/5,138.50
  6. Step 6: Final answer
    x = 4,343.33

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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.