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Finding the Fourth Proportional to 3,700.88, 5,111.28 and 2,519.88

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Solution

The fourth proportional to 3,700.88, 5,111.28 and 2,519.88 is: 3,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,700.88 : 5,111.28 = 2,519.88 : x
  2. Step 2: Convert to fraction form
    3,700.88/5,111.28 = 2,519.88/x
  3. Step 3: Cross multiply
    3,700.88x = 5,111.28 × 2,519.88
  4. Step 4: Simplify right side
    3,700.88x = 12,879,812.25
  5. Step 5: Solve for x
    x = 12,879,812.25/3,700.88
  6. Step 6: Final answer
    x = 3,480.20

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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.