Home / 5,387.60-8,080.74-1,439.15

Finding the Fourth Proportional to 5,387.60, 8,080.74 and 1,439.15

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Solution

The fourth proportional to 5,387.60, 8,080.74 and 1,439.15 is: 2,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.60 : 8,080.74 = 1,439.15 : x
  2. Step 2: Convert to fraction form
    5,387.60/8,080.74 = 1,439.15/x
  3. Step 3: Cross multiply
    5,387.60x = 8,080.74 × 1,439.15
  4. Step 4: Simplify right side
    5,387.60x = 11,629,356.57
  5. Step 5: Solve for x
    x = 11,629,356.57/5,387.60
  6. Step 6: Final answer
    x = 2,158.54

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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.