Home / 3,962.08-5,934.99-1,981.78

Finding the Fourth Proportional to 3,962.08, 5,934.99 and 1,981.78

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Solution

The fourth proportional to 3,962.08, 5,934.99 and 1,981.78 is: 2,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,962.08 : 5,934.99 = 1,981.78 : x
  2. Step 2: Convert to fraction form
    3,962.08/5,934.99 = 1,981.78/x
  3. Step 3: Cross multiply
    3,962.08x = 5,934.99 × 1,981.78
  4. Step 4: Simplify right side
    3,962.08x = 11,761,844.48
  5. Step 5: Solve for x
    x = 11,761,844.48/3,962.08
  6. Step 6: Final answer
    x = 2,968.60

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Half scale
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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.