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Finding the Fourth Proportional to 8,706.12, 12,014.14 and 4,727.15

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Solution

The fourth proportional to 8,706.12, 12,014.14 and 4,727.15 is: 6,523.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.12 : 12,014.14 = 4,727.15 : x
  2. Step 2: Convert to fraction form
    8,706.12/12,014.14 = 4,727.15/x
  3. Step 3: Cross multiply
    8,706.12x = 12,014.14 × 4,727.15
  4. Step 4: Simplify right side
    8,706.12x = 56,792,618.27
  5. Step 5: Solve for x
    x = 56,792,618.27/8,706.12
  6. Step 6: Final answer
    x = 6,523.30

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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.