Home / 3,387.85-5,081.55-1,439.89

Finding the Fourth Proportional to 3,387.85, 5,081.55 and 1,439.89

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Solution

The fourth proportional to 3,387.85, 5,081.55 and 1,439.89 is: 2,159.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.85 : 5,081.55 = 1,439.89 : x
  2. Step 2: Convert to fraction form
    3,387.85/5,081.55 = 1,439.89/x
  3. Step 3: Cross multiply
    3,387.85x = 5,081.55 × 1,439.89
  4. Step 4: Simplify right side
    3,387.85x = 7,316,873.03
  5. Step 5: Solve for x
    x = 7,316,873.03/3,387.85
  6. Step 6: Final answer
    x = 2,159.74

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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.