Home / 1,218.57-1,827.89-396.93

Finding the Fourth Proportional to 1,218.57, 1,827.89 and 396.93

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Solution

The fourth proportional to 1,218.57, 1,827.89 and 396.93 is: 595.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.57 : 1,827.89 = 396.93 : x
  2. Step 2: Convert to fraction form
    1,218.57/1,827.89 = 396.93/x
  3. Step 3: Cross multiply
    1,218.57x = 1,827.89 × 396.93
  4. Step 4: Simplify right side
    1,218.57x = 725,542.39
  5. Step 5: Solve for x
    x = 725,542.39/1,218.57
  6. Step 6: Final answer
    x = 595.40

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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.