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Finding the Fourth Proportional to 7,321.52, 10,982.88 and 2,391.05

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Solution

The fourth proportional to 7,321.52, 10,982.88 and 2,391.05 is: 3,586.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.52 : 10,982.88 = 2,391.05 : x
  2. Step 2: Convert to fraction form
    7,321.52/10,982.88 = 2,391.05/x
  3. Step 3: Cross multiply
    7,321.52x = 10,982.88 × 2,391.05
  4. Step 4: Simplify right side
    7,321.52x = 26,260,615.22
  5. Step 5: Solve for x
    x = 26,260,615.22/7,321.52
  6. Step 6: Final answer
    x = 3,586.77

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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.