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Finding the Fourth Proportional to 8,756.70, 12,083.92 and 4,777.72

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Solution

The fourth proportional to 8,756.70, 12,083.92 and 4,777.72 is: 6,593.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.70 : 12,083.92 = 4,777.72 : x
  2. Step 2: Convert to fraction form
    8,756.70/12,083.92 = 4,777.72/x
  3. Step 3: Cross multiply
    8,756.70x = 12,083.92 × 4,777.72
  4. Step 4: Simplify right side
    8,756.70x = 57,733,612.08
  5. Step 5: Solve for x
    x = 57,733,612.08/8,756.70
  6. Step 6: Final answer
    x = 6,593.08

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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.