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Finding the Fourth Proportional to 5,615.52, 8,423.04 and 2,152.56

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Solution

The fourth proportional to 5,615.52, 8,423.04 and 2,152.56 is: 3,228.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.52 : 8,423.04 = 2,152.56 : x
  2. Step 2: Convert to fraction form
    5,615.52/8,423.04 = 2,152.56/x
  3. Step 3: Cross multiply
    5,615.52x = 8,423.04 × 2,152.56
  4. Step 4: Simplify right side
    5,615.52x = 18,131,098.98
  5. Step 5: Solve for x
    x = 18,131,098.98/5,615.52
  6. Step 6: Final answer
    x = 3,228.75

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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.