Home / 1,319.15-1,974.09-1,042.36

Finding the Fourth Proportional to 1,319.15, 1,974.09 and 1,042.36

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Solution

The fourth proportional to 1,319.15, 1,974.09 and 1,042.36 is: 1,559.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.15 : 1,974.09 = 1,042.36 : x
  2. Step 2: Convert to fraction form
    1,319.15/1,974.09 = 1,042.36/x
  3. Step 3: Cross multiply
    1,319.15x = 1,974.09 × 1,042.36
  4. Step 4: Simplify right side
    1,319.15x = 2,057,707.52
  5. Step 5: Solve for x
    x = 2,057,707.52/1,319.15
  6. Step 6: Final answer
    x = 1,559.87

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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.