Home / 1,449.40-2,170.50-1,242.28

Finding the Fourth Proportional to 1,449.40, 2,170.50 and 1,242.28

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Solution

The fourth proportional to 1,449.40, 2,170.50 and 1,242.28 is: 1,860.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.40 : 2,170.50 = 1,242.28 : x
  2. Step 2: Convert to fraction form
    1,449.40/2,170.50 = 1,242.28/x
  3. Step 3: Cross multiply
    1,449.40x = 2,170.50 × 1,242.28
  4. Step 4: Simplify right side
    1,449.40x = 2,696,368.74
  5. Step 5: Solve for x
    x = 2,696,368.74/1,449.40
  6. Step 6: Final answer
    x = 1,860.33

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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.