Home / 3,387.50-5,083.38-1,439.72

Finding the Fourth Proportional to 3,387.50, 5,083.38 and 1,439.72

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Solution

The fourth proportional to 3,387.50, 5,083.38 and 1,439.72 is: 2,160.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.50 : 5,083.38 = 1,439.72 : x
  2. Step 2: Convert to fraction form
    3,387.50/5,083.38 = 1,439.72/x
  3. Step 3: Cross multiply
    3,387.50x = 5,083.38 × 1,439.72
  4. Step 4: Simplify right side
    3,387.50x = 7,318,643.85
  5. Step 5: Solve for x
    x = 7,318,643.85/3,387.50
  6. Step 6: Final answer
    x = 2,160.49

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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.