Home / 2,221.29-3,065.55-1,226.76

Finding the Fourth Proportional to 2,221.29, 3,065.55 and 1,226.76

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Solution

The fourth proportional to 2,221.29, 3,065.55 and 1,226.76 is: 1,693.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.29 : 3,065.55 = 1,226.76 : x
  2. Step 2: Convert to fraction form
    2,221.29/3,065.55 = 1,226.76/x
  3. Step 3: Cross multiply
    2,221.29x = 3,065.55 × 1,226.76
  4. Step 4: Simplify right side
    2,221.29x = 3,760,694.12
  5. Step 5: Solve for x
    x = 3,760,694.12/2,221.29
  6. Step 6: Final answer
    x = 1,693.02

Related Problems

Find fourth proportional to 1,110.65, 1,532.78 and 613.38
Half scale
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Double scale
Find fourth proportional to 2,222.29, 3,066.93 and 1,227.76
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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.