Home / 5,387.61-8,081.39-1,877.58

Finding the Fourth Proportional to 5,387.61, 8,081.39 and 1,877.58

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Solution

The fourth proportional to 5,387.61, 8,081.39 and 1,877.58 is: 2,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.61 : 8,081.39 = 1,877.58 : x
  2. Step 2: Convert to fraction form
    5,387.61/8,081.39 = 1,877.58/x
  3. Step 3: Cross multiply
    5,387.61x = 8,081.39 × 1,877.58
  4. Step 4: Simplify right side
    5,387.61x = 15,173,446.85
  5. Step 5: Solve for x
    x = 15,173,446.85/5,387.61
  6. Step 6: Final answer
    x = 2,816.36

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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.