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Finding the Fourth Proportional to 8,993.90, 12,399.48 and 6,301.50

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Solution

The fourth proportional to 8,993.90, 12,399.48 and 6,301.50 is: 8,687.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.90 : 12,399.48 = 6,301.50 : x
  2. Step 2: Convert to fraction form
    8,993.90/12,399.48 = 6,301.50/x
  3. Step 3: Cross multiply
    8,993.90x = 12,399.48 × 6,301.50
  4. Step 4: Simplify right side
    8,993.90x = 78,135,276.72
  5. Step 5: Solve for x
    x = 78,135,276.72/8,993.90
  6. Step 6: Final answer
    x = 8,687.58

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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.