Home / 2,221.23-3,065.22-1,276.99

Finding the Fourth Proportional to 2,221.23, 3,065.22 and 1,276.99

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Solution

The fourth proportional to 2,221.23, 3,065.22 and 1,276.99 is: 1,762.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.23 : 3,065.22 = 1,276.99 : x
  2. Step 2: Convert to fraction form
    2,221.23/3,065.22 = 1,276.99/x
  3. Step 3: Cross multiply
    2,221.23x = 3,065.22 × 1,276.99
  4. Step 4: Simplify right side
    2,221.23x = 3,914,255.29
  5. Step 5: Solve for x
    x = 3,914,255.29/2,221.23
  6. Step 6: Final answer
    x = 1,762.20

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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.