Home / 3,398.00-4,689.40-2,122.64

Finding the Fourth Proportional to 3,398.00, 4,689.40 and 2,122.64

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Solution

The fourth proportional to 3,398.00, 4,689.40 and 2,122.64 is: 2,929.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.00 : 4,689.40 = 2,122.64 : x
  2. Step 2: Convert to fraction form
    3,398.00/4,689.40 = 2,122.64/x
  3. Step 3: Cross multiply
    3,398.00x = 4,689.40 × 2,122.64
  4. Step 4: Simplify right side
    3,398.00x = 9,953,901.60
  5. Step 5: Solve for x
    x = 9,953,901.60/3,398.00
  6. Step 6: Final answer
    x = 2,929.34

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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.