Home / 1,221.86-1,823.06-1,193.82

Finding the Fourth Proportional to 1,221.86, 1,823.06 and 1,193.82

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Solution

The fourth proportional to 1,221.86, 1,823.06 and 1,193.82 is: 1,781.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221.86 : 1,823.06 = 1,193.82 : x
  2. Step 2: Convert to fraction form
    1,221.86/1,823.06 = 1,193.82/x
  3. Step 3: Cross multiply
    1,221.86x = 1,823.06 × 1,193.82
  4. Step 4: Simplify right side
    1,221.86x = 2,176,405.49
  5. Step 5: Solve for x
    x = 2,176,405.49/1,221.86
  6. Step 6: Final answer
    x = 1,781.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.