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Finding the Fourth Proportional to 7,329.78, 10,990.80 and 2,398.80

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Solution

The fourth proportional to 7,329.78, 10,990.80 and 2,398.80 is: 3,596.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,329.78 : 10,990.80 = 2,398.80 : x
  2. Step 2: Convert to fraction form
    7,329.78/10,990.80 = 2,398.80/x
  3. Step 3: Cross multiply
    7,329.78x = 10,990.80 × 2,398.80
  4. Step 4: Simplify right side
    7,329.78x = 26,364,731.04
  5. Step 5: Solve for x
    x = 26,364,731.04/7,329.78
  6. Step 6: Final answer
    x = 3,596.93

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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.