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Finding the Fourth Proportional to 8,761.95, 12,091.78 and 4,783.28

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Solution

The fourth proportional to 8,761.95, 12,091.78 and 4,783.28 is: 6,601.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.95 : 12,091.78 = 4,783.28 : x
  2. Step 2: Convert to fraction form
    8,761.95/12,091.78 = 4,783.28/x
  3. Step 3: Cross multiply
    8,761.95x = 12,091.78 × 4,783.28
  4. Step 4: Simplify right side
    8,761.95x = 57,838,297.02
  5. Step 5: Solve for x
    x = 57,838,297.02/8,761.95
  6. Step 6: Final answer
    x = 6,601.08

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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.