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Finding the Fourth Proportional to 3,379.65, 5,047.01 and 2,918.55

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Solution

The fourth proportional to 3,379.65, 5,047.01 and 2,918.55 is: 4,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379.65 : 5,047.01 = 2,918.55 : x
  2. Step 2: Convert to fraction form
    3,379.65/5,047.01 = 2,918.55/x
  3. Step 3: Cross multiply
    3,379.65x = 5,047.01 × 2,918.55
  4. Step 4: Simplify right side
    3,379.65x = 14,729,951.04
  5. Step 5: Solve for x
    x = 14,729,951.04/3,379.65
  6. Step 6: Final answer
    x = 4,358.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.