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Finding the Fourth Proportional to 8,706.67, 12,015.19 and 4,727.79

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Solution

The fourth proportional to 8,706.67, 12,015.19 and 4,727.79 is: 6,524.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.67 : 12,015.19 = 4,727.79 : x
  2. Step 2: Convert to fraction form
    8,706.67/12,015.19 = 4,727.79/x
  3. Step 3: Cross multiply
    8,706.67x = 12,015.19 × 4,727.79
  4. Step 4: Simplify right side
    8,706.67x = 56,805,263.84
  5. Step 5: Solve for x
    x = 56,805,263.84/8,706.67
  6. Step 6: Final answer
    x = 6,524.34

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Half scale
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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.