Home / 1,438.61-2,147.49-1,244.88

Finding the Fourth Proportional to 1,438.61, 2,147.49 and 1,244.88

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Solution

The fourth proportional to 1,438.61, 2,147.49 and 1,244.88 is: 1,858.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.61 : 2,147.49 = 1,244.88 : x
  2. Step 2: Convert to fraction form
    1,438.61/2,147.49 = 1,244.88/x
  3. Step 3: Cross multiply
    1,438.61x = 2,147.49 × 1,244.88
  4. Step 4: Simplify right side
    1,438.61x = 2,673,367.35
  5. Step 5: Solve for x
    x = 2,673,367.35/1,438.61
  6. Step 6: Final answer
    x = 1,858.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.