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Finding the Fourth Proportional to 8,780.86, 13,093.84 and 8,701.84

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Solution

The fourth proportional to 8,780.86, 13,093.84 and 8,701.84 is: 12,976.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.86 : 13,093.84 = 8,701.84 : x
  2. Step 2: Convert to fraction form
    8,780.86/13,093.84 = 8,701.84/x
  3. Step 3: Cross multiply
    8,780.86x = 13,093.84 × 8,701.84
  4. Step 4: Simplify right side
    8,780.86x = 113,940,457.16
  5. Step 5: Solve for x
    x = 113,940,457.16/8,780.86
  6. Step 6: Final answer
    x = 12,976.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.