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Finding the Fourth Proportional to 8,858.84, 13,290.09 and 7,408.13

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Solution

The fourth proportional to 8,858.84, 13,290.09 and 7,408.13 is: 11,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.84 : 13,290.09 = 7,408.13 : x
  2. Step 2: Convert to fraction form
    8,858.84/13,290.09 = 7,408.13/x
  3. Step 3: Cross multiply
    8,858.84x = 13,290.09 × 7,408.13
  4. Step 4: Simplify right side
    8,858.84x = 98,454,714.43
  5. Step 5: Solve for x
    x = 98,454,714.43/8,858.84
  6. Step 6: Final answer
    x = 11,113.73

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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.