Home / 5,177.31-7,144.77-2,939.14

Finding the Fourth Proportional to 5,177.31, 7,144.77 and 2,939.14

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Solution

The fourth proportional to 5,177.31, 7,144.77 and 2,939.14 is: 4,056.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.31 : 7,144.77 = 2,939.14 : x
  2. Step 2: Convert to fraction form
    5,177.31/7,144.77 = 2,939.14/x
  3. Step 3: Cross multiply
    5,177.31x = 7,144.77 × 2,939.14
  4. Step 4: Simplify right side
    5,177.31x = 20,999,479.30
  5. Step 5: Solve for x
    x = 20,999,479.30/5,177.31
  6. Step 6: Final answer
    x = 4,056.06

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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.