Home / 5,251.43-7,878.68-1,553.75

Finding the Fourth Proportional to 5,251.43, 7,878.68 and 1,553.75

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Solution

The fourth proportional to 5,251.43, 7,878.68 and 1,553.75 is: 2,331.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.43 : 7,878.68 = 1,553.75 : x
  2. Step 2: Convert to fraction form
    5,251.43/7,878.68 = 1,553.75/x
  3. Step 3: Cross multiply
    5,251.43x = 7,878.68 × 1,553.75
  4. Step 4: Simplify right side
    5,251.43x = 12,241,451.89
  5. Step 5: Solve for x
    x = 12,241,451.89/5,251.43
  6. Step 6: Final answer
    x = 2,331.07

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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.