Home / 2,117.68-3,175.28-1,076.42

Finding the Fourth Proportional to 2,117.68, 3,175.28 and 1,076.42

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Solution

The fourth proportional to 2,117.68, 3,175.28 and 1,076.42 is: 1,614.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.68 : 3,175.28 = 1,076.42 : x
  2. Step 2: Convert to fraction form
    2,117.68/3,175.28 = 1,076.42/x
  3. Step 3: Cross multiply
    2,117.68x = 3,175.28 × 1,076.42
  4. Step 4: Simplify right side
    2,117.68x = 3,417,934.90
  5. Step 5: Solve for x
    x = 3,417,934.90/2,117.68
  6. Step 6: Final answer
    x = 1,614.00

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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.