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Finding the Fourth Proportional to 1,974.91, 2,963.01 and 879.07

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Solution

The fourth proportional to 1,974.91, 2,963.01 and 879.07 is: 1,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.91 : 2,963.01 = 879.07 : x
  2. Step 2: Convert to fraction form
    1,974.91/2,963.01 = 879.07/x
  3. Step 3: Cross multiply
    1,974.91x = 2,963.01 × 879.07
  4. Step 4: Simplify right side
    1,974.91x = 2,604,693.20
  5. Step 5: Solve for x
    x = 2,604,693.20/1,974.91
  6. Step 6: Final answer
    x = 1,318.89

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1.5x scale

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.