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Finding the Fourth Proportional to 5,388.52, 8,079.45 and 1,877.71

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Solution

The fourth proportional to 5,388.52, 8,079.45 and 1,877.71 is: 2,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.52 : 8,079.45 = 1,877.71 : x
  2. Step 2: Convert to fraction form
    5,388.52/8,079.45 = 1,877.71/x
  3. Step 3: Cross multiply
    5,388.52x = 8,079.45 × 1,877.71
  4. Step 4: Simplify right side
    5,388.52x = 15,170,864.06
  5. Step 5: Solve for x
    x = 15,170,864.06/5,388.52
  6. Step 6: Final answer
    x = 2,815.40

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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.