Home / 3,743.64-5,615.60-1,278.47

Finding the Fourth Proportional to 3,743.64, 5,615.60 and 1,278.47

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Solution

The fourth proportional to 3,743.64, 5,615.60 and 1,278.47 is: 1,917.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,743.64 : 5,615.60 = 1,278.47 : x
  2. Step 2: Convert to fraction form
    3,743.64/5,615.60 = 1,278.47/x
  3. Step 3: Cross multiply
    3,743.64x = 5,615.60 × 1,278.47
  4. Step 4: Simplify right side
    3,743.64x = 7,179,341.66
  5. Step 5: Solve for x
    x = 7,179,341.66/3,743.64
  6. Step 6: Final answer
    x = 1,917.74

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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.