Home / 5,125.64-7,072.94-2,887.11

Finding the Fourth Proportional to 5,125.64, 7,072.94 and 2,887.11

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Solution

The fourth proportional to 5,125.64, 7,072.94 and 2,887.11 is: 3,983.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.64 : 7,072.94 = 2,887.11 : x
  2. Step 2: Convert to fraction form
    5,125.64/7,072.94 = 2,887.11/x
  3. Step 3: Cross multiply
    5,125.64x = 7,072.94 × 2,887.11
  4. Step 4: Simplify right side
    5,125.64x = 20,420,363.02
  5. Step 5: Solve for x
    x = 20,420,363.02/5,125.64
  6. Step 6: Final answer
    x = 3,983.97

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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.