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Finding the Fourth Proportional to 1,974.02, 2,962.05 and 879.17

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Solution

The fourth proportional to 1,974.02, 2,962.05 and 879.17 is: 1,319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.02 : 2,962.05 = 879.17 : x
  2. Step 2: Convert to fraction form
    1,974.02/2,962.05 = 879.17/x
  3. Step 3: Cross multiply
    1,974.02x = 2,962.05 × 879.17
  4. Step 4: Simplify right side
    1,974.02x = 2,604,141.10
  5. Step 5: Solve for x
    x = 2,604,141.10/1,974.02
  6. Step 6: Final answer
    x = 1,319.21

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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.