Home / 3,743.31-5,615.12-1,278.38

Finding the Fourth Proportional to 3,743.31, 5,615.12 and 1,278.38

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Solution

The fourth proportional to 3,743.31, 5,615.12 and 1,278.38 is: 1,917.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,743.31 : 5,615.12 = 1,278.38 : x
  2. Step 2: Convert to fraction form
    3,743.31/5,615.12 = 1,278.38/x
  3. Step 3: Cross multiply
    3,743.31x = 5,615.12 × 1,278.38
  4. Step 4: Simplify right side
    3,743.31x = 7,178,274.34
  5. Step 5: Solve for x
    x = 7,178,274.34/3,743.31
  6. Step 6: Final answer
    x = 1,917.63

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1.5x scale

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.