Home / 3,621.61-5,432.85-1,281.13

Finding the Fourth Proportional to 3,621.61, 5,432.85 and 1,281.13

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Solution

The fourth proportional to 3,621.61, 5,432.85 and 1,281.13 is: 1,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.61 : 5,432.85 = 1,281.13 : x
  2. Step 2: Convert to fraction form
    3,621.61/5,432.85 = 1,281.13/x
  3. Step 3: Cross multiply
    3,621.61x = 5,432.85 × 1,281.13
  4. Step 4: Simplify right side
    3,621.61x = 6,960,180.71
  5. Step 5: Solve for x
    x = 6,960,180.71/3,621.61
  6. Step 6: Final answer
    x = 1,921.85

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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.