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Finding the Fourth Proportional to 8,621.63, 11,882.53 and 7,423.54

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Solution

The fourth proportional to 8,621.63, 11,882.53 and 7,423.54 is: 10,231.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.63 : 11,882.53 = 7,423.54 : x
  2. Step 2: Convert to fraction form
    8,621.63/11,882.53 = 7,423.54/x
  3. Step 3: Cross multiply
    8,621.63x = 11,882.53 × 7,423.54
  4. Step 4: Simplify right side
    8,621.63x = 88,210,436.76
  5. Step 5: Solve for x
    x = 88,210,436.76/8,621.63
  6. Step 6: Final answer
    x = 10,231.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.