Home / 3,977.93-5,490.14-2,862.56

Finding the Fourth Proportional to 3,977.93, 5,490.14 and 2,862.56

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Solution

The fourth proportional to 3,977.93, 5,490.14 and 2,862.56 is: 3,950.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.93 : 5,490.14 = 2,862.56 : x
  2. Step 2: Convert to fraction form
    3,977.93/5,490.14 = 2,862.56/x
  3. Step 3: Cross multiply
    3,977.93x = 5,490.14 × 2,862.56
  4. Step 4: Simplify right side
    3,977.93x = 15,715,813.39
  5. Step 5: Solve for x
    x = 15,715,813.39/3,977.93
  6. Step 6: Final answer
    x = 3,950.76

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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.