Home / 2,742.59-4,114.49-1,280.95

Finding the Fourth Proportional to 2,742.59, 4,114.49 and 1,280.95

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Solution

The fourth proportional to 2,742.59, 4,114.49 and 1,280.95 is: 1,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.59 : 4,114.49 = 1,280.95 : x
  2. Step 2: Convert to fraction form
    2,742.59/4,114.49 = 1,280.95/x
  3. Step 3: Cross multiply
    2,742.59x = 4,114.49 × 1,280.95
  4. Step 4: Simplify right side
    2,742.59x = 5,270,428.99
  5. Step 5: Solve for x
    x = 5,270,428.99/2,742.59
  6. Step 6: Final answer
    x = 1,921.70

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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.