Home / 5,125.78-7,073.50-2,887.89

Finding the Fourth Proportional to 5,125.78, 7,073.50 and 2,887.89

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Solution

The fourth proportional to 5,125.78, 7,073.50 and 2,887.89 is: 3,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.78 : 7,073.50 = 2,887.89 : x
  2. Step 2: Convert to fraction form
    5,125.78/7,073.50 = 2,887.89/x
  3. Step 3: Cross multiply
    5,125.78x = 7,073.50 × 2,887.89
  4. Step 4: Simplify right side
    5,125.78x = 20,427,489.92
  5. Step 5: Solve for x
    x = 20,427,489.92/5,125.78
  6. Step 6: Final answer
    x = 3,985.25

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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.