Home / 2,715.85-4,049.87-2,691.21

Finding the Fourth Proportional to 2,715.85, 4,049.87 and 2,691.21

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Solution

The fourth proportional to 2,715.85, 4,049.87 and 2,691.21 is: 4,013.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.85 : 4,049.87 = 2,691.21 : x
  2. Step 2: Convert to fraction form
    2,715.85/4,049.87 = 2,691.21/x
  3. Step 3: Cross multiply
    2,715.85x = 4,049.87 × 2,691.21
  4. Step 4: Simplify right side
    2,715.85x = 10,899,050.64
  5. Step 5: Solve for x
    x = 10,899,050.64/2,715.85
  6. Step 6: Final answer
    x = 4,013.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.