Home / 1,438.98-2,159.01-1,273.20

Finding the Fourth Proportional to 1,438.98, 2,159.01 and 1,273.20

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Solution

The fourth proportional to 1,438.98, 2,159.01 and 1,273.20 is: 1,910.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.98 : 2,159.01 = 1,273.20 : x
  2. Step 2: Convert to fraction form
    1,438.98/2,159.01 = 1,273.20/x
  3. Step 3: Cross multiply
    1,438.98x = 2,159.01 × 1,273.20
  4. Step 4: Simplify right side
    1,438.98x = 2,748,851.53
  5. Step 5: Solve for x
    x = 2,748,851.53/1,438.98
  6. Step 6: Final answer
    x = 1,910.28

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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.