Home / 1,227.80-1,841.70-1,207.55

Finding the Fourth Proportional to 1,227.80, 1,841.70 and 1,207.55

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Solution

The fourth proportional to 1,227.80, 1,841.70 and 1,207.55 is: 1,811.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.80 : 1,841.70 = 1,207.55 : x
  2. Step 2: Convert to fraction form
    1,227.80/1,841.70 = 1,207.55/x
  3. Step 3: Cross multiply
    1,227.80x = 1,841.70 × 1,207.55
  4. Step 4: Simplify right side
    1,227.80x = 2,223,944.84
  5. Step 5: Solve for x
    x = 2,223,944.84/1,227.80
  6. Step 6: Final answer
    x = 1,811.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.