Home / 3,128.22-4,669.92-2,909.52

Finding the Fourth Proportional to 3,128.22, 4,669.92 and 2,909.52

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Solution

The fourth proportional to 3,128.22, 4,669.92 and 2,909.52 is: 4,343.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.22 : 4,669.92 = 2,909.52 : x
  2. Step 2: Convert to fraction form
    3,128.22/4,669.92 = 2,909.52/x
  3. Step 3: Cross multiply
    3,128.22x = 4,669.92 × 2,909.52
  4. Step 4: Simplify right side
    3,128.22x = 13,587,225.64
  5. Step 5: Solve for x
    x = 13,587,225.64/3,128.22
  6. Step 6: Final answer
    x = 4,343.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.