Home / 2,221.57-3,065.44-1,277.40

Finding the Fourth Proportional to 2,221.57, 3,065.44 and 1,277.40

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Solution

The fourth proportional to 2,221.57, 3,065.44 and 1,277.40 is: 1,762.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.57 : 3,065.44 = 1,277.40 : x
  2. Step 2: Convert to fraction form
    2,221.57/3,065.44 = 1,277.40/x
  3. Step 3: Cross multiply
    2,221.57x = 3,065.44 × 1,277.40
  4. Step 4: Simplify right side
    2,221.57x = 3,915,793.06
  5. Step 5: Solve for x
    x = 3,915,793.06/2,221.57
  6. Step 6: Final answer
    x = 1,762.62

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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.