Home / 1,865.28-2,799.84-1,379.52

Finding the Fourth Proportional to 1,865.28, 2,799.84 and 1,379.52

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Solution

The fourth proportional to 1,865.28, 2,799.84 and 1,379.52 is: 2,070.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.28 : 2,799.84 = 1,379.52 : x
  2. Step 2: Convert to fraction form
    1,865.28/2,799.84 = 1,379.52/x
  3. Step 3: Cross multiply
    1,865.28x = 2,799.84 × 1,379.52
  4. Step 4: Simplify right side
    1,865.28x = 3,862,435.28
  5. Step 5: Solve for x
    x = 3,862,435.28/1,865.28
  6. Step 6: Final answer
    x = 2,070.70

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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.