Home / 2,220.57-3,064.28-1,275.71

Finding the Fourth Proportional to 2,220.57, 3,064.28 and 1,275.71

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Solution

The fourth proportional to 2,220.57, 3,064.28 and 1,275.71 is: 1,760.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.57 : 3,064.28 = 1,275.71 : x
  2. Step 2: Convert to fraction form
    2,220.57/3,064.28 = 1,275.71/x
  3. Step 3: Cross multiply
    2,220.57x = 3,064.28 × 1,275.71
  4. Step 4: Simplify right side
    2,220.57x = 3,909,110.94
  5. Step 5: Solve for x
    x = 3,909,110.94/2,220.57
  6. Step 6: Final answer
    x = 1,760.41

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1.5x scale

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.