Home / 2,438.94-3,658.77-1,139.70

Finding the Fourth Proportional to 2,438.94, 3,658.77 and 1,139.70

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Solution

The fourth proportional to 2,438.94, 3,658.77 and 1,139.70 is: 1,709.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.94 : 3,658.77 = 1,139.70 : x
  2. Step 2: Convert to fraction form
    2,438.94/3,658.77 = 1,139.70/x
  3. Step 3: Cross multiply
    2,438.94x = 3,658.77 × 1,139.70
  4. Step 4: Simplify right side
    2,438.94x = 4,169,900.17
  5. Step 5: Solve for x
    x = 4,169,900.17/2,438.94
  6. Step 6: Final answer
    x = 1,709.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.