Home / 3,976.68-5,487.30-2,275.14

Finding the Fourth Proportional to 3,976.68, 5,487.30 and 2,275.14

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Solution

The fourth proportional to 3,976.68, 5,487.30 and 2,275.14 is: 3,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.68 : 5,487.30 = 2,275.14 : x
  2. Step 2: Convert to fraction form
    3,976.68/5,487.30 = 2,275.14/x
  3. Step 3: Cross multiply
    3,976.68x = 5,487.30 × 2,275.14
  4. Step 4: Simplify right side
    3,976.68x = 12,484,375.72
  5. Step 5: Solve for x
    x = 12,484,375.72/3,976.68
  6. Step 6: Final answer
    x = 3,139.40

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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.