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Finding the Fourth Proportional to 8,754.30, 12,081.24 and 4,977.63

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Solution

The fourth proportional to 8,754.30, 12,081.24 and 4,977.63 is: 6,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.30 : 12,081.24 = 4,977.63 : x
  2. Step 2: Convert to fraction form
    8,754.30/12,081.24 = 4,977.63/x
  3. Step 3: Cross multiply
    8,754.30x = 12,081.24 × 4,977.63
  4. Step 4: Simplify right side
    8,754.30x = 60,135,942.66
  5. Step 5: Solve for x
    x = 60,135,942.66/8,754.30
  6. Step 6: Final answer
    x = 6,869.30

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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.