Home / 2,741.40-4,112.10-1,280.70

Finding the Fourth Proportional to 2,741.40, 4,112.10 and 1,280.70

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Solution

The fourth proportional to 2,741.40, 4,112.10 and 1,280.70 is: 1,921.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,741.40 : 4,112.10 = 1,280.70 : x
  2. Step 2: Convert to fraction form
    2,741.40/4,112.10 = 1,280.70/x
  3. Step 3: Cross multiply
    2,741.40x = 4,112.10 × 1,280.70
  4. Step 4: Simplify right side
    2,741.40x = 5,266,366.47
  5. Step 5: Solve for x
    x = 5,266,366.47/2,741.40
  6. Step 6: Final answer
    x = 1,921.05

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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.