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Finding the Fourth Proportional to 8,961.06, 12,360.52 and 5,778.52

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Solution

The fourth proportional to 8,961.06, 12,360.52 and 5,778.52 is: 7,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.06 : 12,360.52 = 5,778.52 : x
  2. Step 2: Convert to fraction form
    8,961.06/12,360.52 = 5,778.52/x
  3. Step 3: Cross multiply
    8,961.06x = 12,360.52 × 5,778.52
  4. Step 4: Simplify right side
    8,961.06x = 71,425,512.03
  5. Step 5: Solve for x
    x = 71,425,512.03/8,961.06
  6. Step 6: Final answer
    x = 7,970.65

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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.