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Finding the Fourth Proportional to 8,811.70, 13,217.48 and 8,298.16

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Solution

The fourth proportional to 8,811.70, 13,217.48 and 8,298.16 is: 12,447.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.70 : 13,217.48 = 8,298.16 : x
  2. Step 2: Convert to fraction form
    8,811.70/13,217.48 = 8,298.16/x
  3. Step 3: Cross multiply
    8,811.70x = 13,217.48 × 8,298.16
  4. Step 4: Simplify right side
    8,811.70x = 109,680,763.84
  5. Step 5: Solve for x
    x = 109,680,763.84/8,811.70
  6. Step 6: Final answer
    x = 12,447.17

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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.