Home / 3,318.39-4,977.59-1,126.80

Finding the Fourth Proportional to 3,318.39, 4,977.59 and 1,126.80

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Solution

The fourth proportional to 3,318.39, 4,977.59 and 1,126.80 is: 1,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.39 : 4,977.59 = 1,126.80 : x
  2. Step 2: Convert to fraction form
    3,318.39/4,977.59 = 1,126.80/x
  3. Step 3: Cross multiply
    3,318.39x = 4,977.59 × 1,126.80
  4. Step 4: Simplify right side
    3,318.39x = 5,608,742.78
  5. Step 5: Solve for x
    x = 5,608,742.78/3,318.39
  6. Step 6: Final answer
    x = 1,690.20

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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.