Home / 4,142.92-5,715.30-2,887.06

Finding the Fourth Proportional to 4,142.92, 5,715.30 and 2,887.06

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Solution

The fourth proportional to 4,142.92, 5,715.30 and 2,887.06 is: 3,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.92 : 5,715.30 = 2,887.06 : x
  2. Step 2: Convert to fraction form
    4,142.92/5,715.30 = 2,887.06/x
  3. Step 3: Cross multiply
    4,142.92x = 5,715.30 × 2,887.06
  4. Step 4: Simplify right side
    4,142.92x = 16,500,414.02
  5. Step 5: Solve for x
    x = 16,500,414.02/4,142.92
  6. Step 6: Final answer
    x = 3,982.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.