Home / 5,177.79-7,145.46-2,939.76

Finding the Fourth Proportional to 5,177.79, 7,145.46 and 2,939.76

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Solution

The fourth proportional to 5,177.79, 7,145.46 and 2,939.76 is: 4,056.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.79 : 7,145.46 = 2,939.76 : x
  2. Step 2: Convert to fraction form
    5,177.79/7,145.46 = 2,939.76/x
  3. Step 3: Cross multiply
    5,177.79x = 7,145.46 × 2,939.76
  4. Step 4: Simplify right side
    5,177.79x = 21,005,937.49
  5. Step 5: Solve for x
    x = 21,005,937.49/5,177.79
  6. Step 6: Final answer
    x = 4,056.93

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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.