Home / 2,221.02-3,065.19-1,276.97

Finding the Fourth Proportional to 2,221.02, 3,065.19 and 1,276.97

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Solution

The fourth proportional to 2,221.02, 3,065.19 and 1,276.97 is: 1,762.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.02 : 3,065.19 = 1,276.97 : x
  2. Step 2: Convert to fraction form
    2,221.02/3,065.19 = 1,276.97/x
  3. Step 3: Cross multiply
    2,221.02x = 3,065.19 × 1,276.97
  4. Step 4: Simplify right side
    2,221.02x = 3,914,155.67
  5. Step 5: Solve for x
    x = 3,914,155.67/2,221.02
  6. Step 6: Final answer
    x = 1,762.32

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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.