Home / 3,417.28-5,125.86-1,108.78

Finding the Fourth Proportional to 3,417.28, 5,125.86 and 1,108.78

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Solution

The fourth proportional to 3,417.28, 5,125.86 and 1,108.78 is: 1,663.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,417.28 : 5,125.86 = 1,108.78 : x
  2. Step 2: Convert to fraction form
    3,417.28/5,125.86 = 1,108.78/x
  3. Step 3: Cross multiply
    3,417.28x = 5,125.86 × 1,108.78
  4. Step 4: Simplify right side
    3,417.28x = 5,683,451.05
  5. Step 5: Solve for x
    x = 5,683,451.05/3,417.28
  6. Step 6: Final answer
    x = 1,663.15

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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.