Home / 2,221.12-3,065.40-1,336.87

Finding the Fourth Proportional to 2,221.12, 3,065.40 and 1,336.87

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Solution

The fourth proportional to 2,221.12, 3,065.40 and 1,336.87 is: 1,845.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.12 : 3,065.40 = 1,336.87 : x
  2. Step 2: Convert to fraction form
    2,221.12/3,065.40 = 1,336.87/x
  3. Step 3: Cross multiply
    2,221.12x = 3,065.40 × 1,336.87
  4. Step 4: Simplify right side
    2,221.12x = 4,098,041.30
  5. Step 5: Solve for x
    x = 4,098,041.30/2,221.12
  6. Step 6: Final answer
    x = 1,845.03

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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.