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Finding the Fourth Proportional to 5,266.96, 7,899.96 and 1,979.92

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Solution

The fourth proportional to 5,266.96, 7,899.96 and 1,979.92 is: 2,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,266.96 : 7,899.96 = 1,979.92 : x
  2. Step 2: Convert to fraction form
    5,266.96/7,899.96 = 1,979.92/x
  3. Step 3: Cross multiply
    5,266.96x = 7,899.96 × 1,979.92
  4. Step 4: Simplify right side
    5,266.96x = 15,641,288.80
  5. Step 5: Solve for x
    x = 15,641,288.80/5,266.96
  6. Step 6: Final answer
    x = 2,969.70

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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.