Home / 1,217.94-1,827.56-487.55

Finding the Fourth Proportional to 1,217.94, 1,827.56 and 487.55

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Solution

The fourth proportional to 1,217.94, 1,827.56 and 487.55 is: 731.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.94 : 1,827.56 = 487.55 : x
  2. Step 2: Convert to fraction form
    1,217.94/1,827.56 = 487.55/x
  3. Step 3: Cross multiply
    1,217.94x = 1,827.56 × 487.55
  4. Step 4: Simplify right side
    1,217.94x = 891,032.67
  5. Step 5: Solve for x
    x = 891,032.67/1,217.94
  6. Step 6: Final answer
    x = 731.59

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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.