Home / 3,129.24-4,309.02-2,686.44

Finding the Fourth Proportional to 3,129.24, 4,309.02 and 2,686.44

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Solution

The fourth proportional to 3,129.24, 4,309.02 and 2,686.44 is: 3,699.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.24 : 4,309.02 = 2,686.44 : x
  2. Step 2: Convert to fraction form
    3,129.24/4,309.02 = 2,686.44/x
  3. Step 3: Cross multiply
    3,129.24x = 4,309.02 × 2,686.44
  4. Step 4: Simplify right side
    3,129.24x = 11,575,923.69
  5. Step 5: Solve for x
    x = 11,575,923.69/3,129.24
  6. Step 6: Final answer
    x = 3,699.28

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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.