Home / 3,743.40-5,615.80-1,278.92

Finding the Fourth Proportional to 3,743.40, 5,615.80 and 1,278.92

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Solution

The fourth proportional to 3,743.40, 5,615.80 and 1,278.92 is: 1,918.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,743.40 : 5,615.80 = 1,278.92 : x
  2. Step 2: Convert to fraction form
    3,743.40/5,615.80 = 1,278.92/x
  3. Step 3: Cross multiply
    3,743.40x = 5,615.80 × 1,278.92
  4. Step 4: Simplify right side
    3,743.40x = 7,182,158.94
  5. Step 5: Solve for x
    x = 7,182,158.94/3,743.40
  6. Step 6: Final answer
    x = 1,918.62

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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.