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Finding the Fourth Proportional to 1,974.78, 2,961.13 and 587.93

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Solution

The fourth proportional to 1,974.78, 2,961.13 and 587.93 is: 881.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.78 : 2,961.13 = 587.93 : x
  2. Step 2: Convert to fraction form
    1,974.78/2,961.13 = 587.93/x
  3. Step 3: Cross multiply
    1,974.78x = 2,961.13 × 587.93
  4. Step 4: Simplify right side
    1,974.78x = 1,740,937.16
  5. Step 5: Solve for x
    x = 1,740,937.16/1,974.78
  6. Step 6: Final answer
    x = 881.59

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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.