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Finding the Fourth Proportional to 7,371.36, 11,034.96 and 7,108.80

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Solution

The fourth proportional to 7,371.36, 11,034.96 and 7,108.80 is: 10,641.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,371.36 : 11,034.96 = 7,108.80 : x
  2. Step 2: Convert to fraction form
    7,371.36/11,034.96 = 7,108.80/x
  3. Step 3: Cross multiply
    7,371.36x = 11,034.96 × 7,108.80
  4. Step 4: Simplify right side
    7,371.36x = 78,445,323.65
  5. Step 5: Solve for x
    x = 78,445,323.65/7,371.36
  6. Step 6: Final answer
    x = 10,641.91

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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.