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Finding the Fourth Proportional to 8,995.40, 12,408.66 and 5,268.68

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Solution

The fourth proportional to 8,995.40, 12,408.66 and 5,268.68 is: 7,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.40 : 12,408.66 = 5,268.68 : x
  2. Step 2: Convert to fraction form
    8,995.40/12,408.66 = 5,268.68/x
  3. Step 3: Cross multiply
    8,995.40x = 12,408.66 × 5,268.68
  4. Step 4: Simplify right side
    8,995.40x = 65,377,258.77
  5. Step 5: Solve for x
    x = 65,377,258.77/8,995.40
  6. Step 6: Final answer
    x = 7,267.85

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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.