Home / 4,451.11-6,678.20-1,987.63

Finding the Fourth Proportional to 4,451.11, 6,678.20 and 1,987.63

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Solution

The fourth proportional to 4,451.11, 6,678.20 and 1,987.63 is: 2,982.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,451.11 : 6,678.20 = 1,987.63 : x
  2. Step 2: Convert to fraction form
    4,451.11/6,678.20 = 1,987.63/x
  3. Step 3: Cross multiply
    4,451.11x = 6,678.20 × 1,987.63
  4. Step 4: Simplify right side
    4,451.11x = 13,273,790.67
  5. Step 5: Solve for x
    x = 13,273,790.67/4,451.11
  6. Step 6: Final answer
    x = 2,982.13

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Half scale
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Double scale
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Similar ratio
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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.