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Finding the Fourth Proportional to 8,391.23, 12,585.98 and 2,844.42

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Solution

The fourth proportional to 8,391.23, 12,585.98 and 2,844.42 is: 4,266.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.23 : 12,585.98 = 2,844.42 : x
  2. Step 2: Convert to fraction form
    8,391.23/12,585.98 = 2,844.42/x
  3. Step 3: Cross multiply
    8,391.23x = 12,585.98 × 2,844.42
  4. Step 4: Simplify right side
    8,391.23x = 35,799,799.01
  5. Step 5: Solve for x
    x = 35,799,799.01/8,391.23
  6. Step 6: Final answer
    x = 4,266.34

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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.