Home / 2,438.24-3,657.90-1,139

Finding the Fourth Proportional to 2,438.24, 3,657.90 and 1,139

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Solution

The fourth proportional to 2,438.24, 3,657.90 and 1,139 is: 1,708.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.24 : 3,657.90 = 1,139 : x
  2. Step 2: Convert to fraction form
    2,438.24/3,657.90 = 1,139/x
  3. Step 3: Cross multiply
    2,438.24x = 3,657.90 × 1,139
  4. Step 4: Simplify right side
    2,438.24x = 4,166,348.10
  5. Step 5: Solve for x
    x = 4,166,348.10/2,438.24
  6. Step 6: Final answer
    x = 1,708.75

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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.