Home / 3,691.20-5,537.40-1,225.50

Finding the Fourth Proportional to 3,691.20, 5,537.40 and 1,225.50

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Solution

The fourth proportional to 3,691.20, 5,537.40 and 1,225.50 is: 1,838.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.20 : 5,537.40 = 1,225.50 : x
  2. Step 2: Convert to fraction form
    3,691.20/5,537.40 = 1,225.50/x
  3. Step 3: Cross multiply
    3,691.20x = 5,537.40 × 1,225.50
  4. Step 4: Simplify right side
    3,691.20x = 6,786,083.70
  5. Step 5: Solve for x
    x = 6,786,083.70/3,691.20
  6. Step 6: Final answer
    x = 1,838.45

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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.