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Finding the Fourth Proportional to 8,809.56, 13,210.16 and 5,112.92

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Solution

The fourth proportional to 8,809.56, 13,210.16 and 5,112.92 is: 7,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.56 : 13,210.16 = 5,112.92 : x
  2. Step 2: Convert to fraction form
    8,809.56/13,210.16 = 5,112.92/x
  3. Step 3: Cross multiply
    8,809.56x = 13,210.16 × 5,112.92
  4. Step 4: Simplify right side
    8,809.56x = 67,542,498.73
  5. Step 5: Solve for x
    x = 67,542,498.73/8,809.56
  6. Step 6: Final answer
    x = 7,666.95

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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.