Home / 3,615.31-5,421.30-1,274.86

Finding the Fourth Proportional to 3,615.31, 5,421.30 and 1,274.86

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Solution

The fourth proportional to 3,615.31, 5,421.30 and 1,274.86 is: 1,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.31 : 5,421.30 = 1,274.86 : x
  2. Step 2: Convert to fraction form
    3,615.31/5,421.30 = 1,274.86/x
  3. Step 3: Cross multiply
    3,615.31x = 5,421.30 × 1,274.86
  4. Step 4: Simplify right side
    3,615.31x = 6,911,398.52
  5. Step 5: Solve for x
    x = 6,911,398.52/3,615.31
  6. Step 6: Final answer
    x = 1,911.70

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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.