Home / 2,861.16-4,279.12-2,490.56

Finding the Fourth Proportional to 2,861.16, 4,279.12 and 2,490.56

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Solution

The fourth proportional to 2,861.16, 4,279.12 and 2,490.56 is: 3,724.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.16 : 4,279.12 = 2,490.56 : x
  2. Step 2: Convert to fraction form
    2,861.16/4,279.12 = 2,490.56/x
  3. Step 3: Cross multiply
    2,861.16x = 4,279.12 × 2,490.56
  4. Step 4: Simplify right side
    2,861.16x = 10,657,405.11
  5. Step 5: Solve for x
    x = 10,657,405.11/2,861.16
  6. Step 6: Final answer
    x = 3,724.85

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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.