Home / 3,612.50-5,419.51-1,272.56

Finding the Fourth Proportional to 3,612.50, 5,419.51 and 1,272.56

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Solution

The fourth proportional to 3,612.50, 5,419.51 and 1,272.56 is: 1,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.50 : 5,419.51 = 1,272.56 : x
  2. Step 2: Convert to fraction form
    3,612.50/5,419.51 = 1,272.56/x
  3. Step 3: Cross multiply
    3,612.50x = 5,419.51 × 1,272.56
  4. Step 4: Simplify right side
    3,612.50x = 6,896,651.85
  5. Step 5: Solve for x
    x = 6,896,651.85/3,612.50
  6. Step 6: Final answer
    x = 1,909.11

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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.