Home / 5,117.20-7,061.22-2,878.88

Finding the Fourth Proportional to 5,117.20, 7,061.22 and 2,878.88

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Solution

The fourth proportional to 5,117.20, 7,061.22 and 2,878.88 is: 3,972.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.20 : 7,061.22 = 2,878.88 : x
  2. Step 2: Convert to fraction form
    5,117.20/7,061.22 = 2,878.88/x
  3. Step 3: Cross multiply
    5,117.20x = 7,061.22 × 2,878.88
  4. Step 4: Simplify right side
    5,117.20x = 20,328,405.03
  5. Step 5: Solve for x
    x = 20,328,405.03/5,117.20
  6. Step 6: Final answer
    x = 3,972.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.