Home / 1,218.01-1,826.11-487.03

Finding the Fourth Proportional to 1,218.01, 1,826.11 and 487.03

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Solution

The fourth proportional to 1,218.01, 1,826.11 and 487.03 is: 730.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.01 : 1,826.11 = 487.03 : x
  2. Step 2: Convert to fraction form
    1,218.01/1,826.11 = 487.03/x
  3. Step 3: Cross multiply
    1,218.01x = 1,826.11 × 487.03
  4. Step 4: Simplify right side
    1,218.01x = 889,370.35
  5. Step 5: Solve for x
    x = 889,370.35/1,218.01
  6. Step 6: Final answer
    x = 730.18

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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.