Home / 1,353.01-2,017.82-1,221.79

Finding the Fourth Proportional to 1,353.01, 2,017.82 and 1,221.79

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Solution

The fourth proportional to 1,353.01, 2,017.82 and 1,221.79 is: 1,822.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.01 : 2,017.82 = 1,221.79 : x
  2. Step 2: Convert to fraction form
    1,353.01/2,017.82 = 1,221.79/x
  3. Step 3: Cross multiply
    1,353.01x = 2,017.82 × 1,221.79
  4. Step 4: Simplify right side
    1,353.01x = 2,465,352.30
  5. Step 5: Solve for x
    x = 2,465,352.30/1,353.01
  6. Step 6: Final answer
    x = 1,822.12

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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.