Home / 3,545.12-4,891.68-1,972.88

Finding the Fourth Proportional to 3,545.12, 4,891.68 and 1,972.88

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Solution

The fourth proportional to 3,545.12, 4,891.68 and 1,972.88 is: 2,722.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.12 : 4,891.68 = 1,972.88 : x
  2. Step 2: Convert to fraction form
    3,545.12/4,891.68 = 1,972.88/x
  3. Step 3: Cross multiply
    3,545.12x = 4,891.68 × 1,972.88
  4. Step 4: Simplify right side
    3,545.12x = 9,650,697.64
  5. Step 5: Solve for x
    x = 9,650,697.64/3,545.12
  6. Step 6: Final answer
    x = 2,722.25

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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.