Home / 1,218.08-1,827.52-487.44

Finding the Fourth Proportional to 1,218.08, 1,827.52 and 487.44

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Solution

The fourth proportional to 1,218.08, 1,827.52 and 487.44 is: 731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.08 : 1,827.52 = 487.44 : x
  2. Step 2: Convert to fraction form
    1,218.08/1,827.52 = 487.44/x
  3. Step 3: Cross multiply
    1,218.08x = 1,827.52 × 487.44
  4. Step 4: Simplify right side
    1,218.08x = 890,806.35
  5. Step 5: Solve for x
    x = 890,806.35/1,218.08
  6. Step 6: Final answer
    x = 731.32

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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.