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Finding the Fourth Proportional to 8,897.68, 13,348.89 and 7,408.84

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Solution

The fourth proportional to 8,897.68, 13,348.89 and 7,408.84 is: 11,115.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.68 : 13,348.89 = 7,408.84 : x
  2. Step 2: Convert to fraction form
    8,897.68/13,348.89 = 7,408.84/x
  3. Step 3: Cross multiply
    8,897.68x = 13,348.89 × 7,408.84
  4. Step 4: Simplify right side
    8,897.68x = 98,899,790.19
  5. Step 5: Solve for x
    x = 98,899,790.19/8,897.68
  6. Step 6: Final answer
    x = 11,115.23

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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.