Home / 5,177.87-7,145.55-2,939.81

Finding the Fourth Proportional to 5,177.87, 7,145.55 and 2,939.81

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Solution

The fourth proportional to 5,177.87, 7,145.55 and 2,939.81 is: 4,056.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.87 : 7,145.55 = 2,939.81 : x
  2. Step 2: Convert to fraction form
    5,177.87/7,145.55 = 2,939.81/x
  3. Step 3: Cross multiply
    5,177.87x = 7,145.55 × 2,939.81
  4. Step 4: Simplify right side
    5,177.87x = 21,006,563.81
  5. Step 5: Solve for x
    x = 21,006,563.81/5,177.87
  6. Step 6: Final answer
    x = 4,056.99

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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.