Home / 3,011.34-4,517.01-1,278.75

Finding the Fourth Proportional to 3,011.34, 4,517.01 and 1,278.75

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Solution

The fourth proportional to 3,011.34, 4,517.01 and 1,278.75 is: 1,918.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.34 : 4,517.01 = 1,278.75 : x
  2. Step 2: Convert to fraction form
    3,011.34/4,517.01 = 1,278.75/x
  3. Step 3: Cross multiply
    3,011.34x = 4,517.01 × 1,278.75
  4. Step 4: Simplify right side
    3,011.34x = 5,776,126.54
  5. Step 5: Solve for x
    x = 5,776,126.54/3,011.34
  6. Step 6: Final answer
    x = 1,918.13

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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.