Home / 1,251.30-1,865.55-1,219.35

Finding the Fourth Proportional to 1,251.30, 1,865.55 and 1,219.35

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Solution

The fourth proportional to 1,251.30, 1,865.55 and 1,219.35 is: 1,817.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.30 : 1,865.55 = 1,219.35 : x
  2. Step 2: Convert to fraction form
    1,251.30/1,865.55 = 1,219.35/x
  3. Step 3: Cross multiply
    1,251.30x = 1,865.55 × 1,219.35
  4. Step 4: Simplify right side
    1,251.30x = 2,274,758.39
  5. Step 5: Solve for x
    x = 2,274,758.39/1,251.30
  6. Step 6: Final answer
    x = 1,817.92

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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.