Home / 2,438.40-3,658.13-1,139.16

Finding the Fourth Proportional to 2,438.40, 3,658.13 and 1,139.16

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Solution

The fourth proportional to 2,438.40, 3,658.13 and 1,139.16 is: 1,708.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.40 : 3,658.13 = 1,139.16 : x
  2. Step 2: Convert to fraction form
    2,438.40/3,658.13 = 1,139.16/x
  3. Step 3: Cross multiply
    2,438.40x = 3,658.13 × 1,139.16
  4. Step 4: Simplify right side
    2,438.40x = 4,167,195.37
  5. Step 5: Solve for x
    x = 4,167,195.37/2,438.40
  6. Step 6: Final answer
    x = 1,708.99

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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.