Home / 2,989.22-4,111.38-2,398.46

Finding the Fourth Proportional to 2,989.22, 4,111.38 and 2,398.46

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Solution

The fourth proportional to 2,989.22, 4,111.38 and 2,398.46 is: 3,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.22 : 4,111.38 = 2,398.46 : x
  2. Step 2: Convert to fraction form
    2,989.22/4,111.38 = 2,398.46/x
  3. Step 3: Cross multiply
    2,989.22x = 4,111.38 × 2,398.46
  4. Step 4: Simplify right side
    2,989.22x = 9,860,959.92
  5. Step 5: Solve for x
    x = 9,860,959.92/2,989.22
  6. Step 6: Final answer
    x = 3,298.85

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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.