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Finding the Fourth Proportional to 7,323.90, 10,988.28 and 2,939.10

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Solution

The fourth proportional to 7,323.90, 10,988.28 and 2,939.10 is: 4,409.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,323.90 : 10,988.28 = 2,939.10 : x
  2. Step 2: Convert to fraction form
    7,323.90/10,988.28 = 2,939.10/x
  3. Step 3: Cross multiply
    7,323.90x = 10,988.28 × 2,939.10
  4. Step 4: Simplify right side
    7,323.90x = 32,295,653.75
  5. Step 5: Solve for x
    x = 32,295,653.75/7,323.90
  6. Step 6: Final answer
    x = 4,409.63

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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.