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Finding the Fourth Proportional to 8,910.25, 12,301.05 and 6,671.32

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Solution

The fourth proportional to 8,910.25, 12,301.05 and 6,671.32 is: 9,210.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.25 : 12,301.05 = 6,671.32 : x
  2. Step 2: Convert to fraction form
    8,910.25/12,301.05 = 6,671.32/x
  3. Step 3: Cross multiply
    8,910.25x = 12,301.05 × 6,671.32
  4. Step 4: Simplify right side
    8,910.25x = 82,064,240.89
  5. Step 5: Solve for x
    x = 82,064,240.89/8,910.25
  6. Step 6: Final answer
    x = 9,210.09

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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.