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Finding the Fourth Proportional to 8,333.76, 12,500.64 and 2,785.86

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Solution

The fourth proportional to 8,333.76, 12,500.64 and 2,785.86 is: 4,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,333.76 : 12,500.64 = 2,785.86 : x
  2. Step 2: Convert to fraction form
    8,333.76/12,500.64 = 2,785.86/x
  3. Step 3: Cross multiply
    8,333.76x = 12,500.64 × 2,785.86
  4. Step 4: Simplify right side
    8,333.76x = 34,825,032.95
  5. Step 5: Solve for x
    x = 34,825,032.95/8,333.76
  6. Step 6: Final answer
    x = 4,178.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.