Home / 5,127.20-7,693.76-2,165.40

Finding the Fourth Proportional to 5,127.20, 7,693.76 and 2,165.40

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Solution

The fourth proportional to 5,127.20, 7,693.76 and 2,165.40 is: 3,249.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.20 : 7,693.76 = 2,165.40 : x
  2. Step 2: Convert to fraction form
    5,127.20/7,693.76 = 2,165.40/x
  3. Step 3: Cross multiply
    5,127.20x = 7,693.76 × 2,165.40
  4. Step 4: Simplify right side
    5,127.20x = 16,660,067.90
  5. Step 5: Solve for x
    x = 16,660,067.90/5,127.20
  6. Step 6: Final answer
    x = 3,249.35

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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.