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Finding the Fourth Proportional to 8,682.85, 12,993.49 and 5,397.49

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Solution

The fourth proportional to 8,682.85, 12,993.49 and 5,397.49 is: 8,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.85 : 12,993.49 = 5,397.49 : x
  2. Step 2: Convert to fraction form
    8,682.85/12,993.49 = 5,397.49/x
  3. Step 3: Cross multiply
    8,682.85x = 12,993.49 × 5,397.49
  4. Step 4: Simplify right side
    8,682.85x = 70,132,232.34
  5. Step 5: Solve for x
    x = 70,132,232.34/8,682.85
  6. Step 6: Final answer
    x = 8,077.10

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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.