Home / 3,012.59-4,518.89-1,280.09

Finding the Fourth Proportional to 3,012.59, 4,518.89 and 1,280.09

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Solution

The fourth proportional to 3,012.59, 4,518.89 and 1,280.09 is: 1,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.59 : 4,518.89 = 1,280.09 : x
  2. Step 2: Convert to fraction form
    3,012.59/4,518.89 = 1,280.09/x
  3. Step 3: Cross multiply
    3,012.59x = 4,518.89 × 1,280.09
  4. Step 4: Simplify right side
    3,012.59x = 5,784,585.90
  5. Step 5: Solve for x
    x = 5,784,585.90/3,012.59
  6. Step 6: Final answer
    x = 1,920.14

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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.