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Finding the Fourth Proportional to 2,883.70, 3,979.72 and 2,174.29

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Solution

The fourth proportional to 2,883.70, 3,979.72 and 2,174.29 is: 3,000.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,883.70 : 3,979.72 = 2,174.29 : x
  2. Step 2: Convert to fraction form
    2,883.70/3,979.72 = 2,174.29/x
  3. Step 3: Cross multiply
    2,883.70x = 3,979.72 × 2,174.29
  4. Step 4: Simplify right side
    2,883.70x = 8,653,068.32
  5. Step 5: Solve for x
    x = 8,653,068.32/2,883.70
  6. Step 6: Final answer
    x = 3,000.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.