Home / 3,643.20-5,031.36-2,986.56

Finding the Fourth Proportional to 3,643.20, 5,031.36 and 2,986.56

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Solution

The fourth proportional to 3,643.20, 5,031.36 and 2,986.56 is: 4,124.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,643.20 : 5,031.36 = 2,986.56 : x
  2. Step 2: Convert to fraction form
    3,643.20/5,031.36 = 2,986.56/x
  3. Step 3: Cross multiply
    3,643.20x = 5,031.36 × 2,986.56
  4. Step 4: Simplify right side
    3,643.20x = 15,026,458.52
  5. Step 5: Solve for x
    x = 15,026,458.52/3,643.20
  6. Step 6: Final answer
    x = 4,124.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.