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Finding the Fourth Proportional to 4,895.90, 7,351.13 and 1,979.90

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Solution

The fourth proportional to 4,895.90, 7,351.13 and 1,979.90 is: 2,972.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,895.90 : 7,351.13 = 1,979.90 : x
  2. Step 2: Convert to fraction form
    4,895.90/7,351.13 = 1,979.90/x
  3. Step 3: Cross multiply
    4,895.90x = 7,351.13 × 1,979.90
  4. Step 4: Simplify right side
    4,895.90x = 14,554,470.48
  5. Step 5: Solve for x
    x = 14,554,470.48/4,895.90
  6. Step 6: Final answer
    x = 2,972.79

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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.