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Finding the Fourth Proportional to 8,706.66, 12,015.20 and 4,727.77

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Solution

The fourth proportional to 8,706.66, 12,015.20 and 4,727.77 is: 6,524.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.66 : 12,015.20 = 4,727.77 : x
  2. Step 2: Convert to fraction form
    8,706.66/12,015.20 = 4,727.77/x
  3. Step 3: Cross multiply
    8,706.66x = 12,015.20 × 4,727.77
  4. Step 4: Simplify right side
    8,706.66x = 56,805,102.10
  5. Step 5: Solve for x
    x = 56,805,102.10/8,706.66
  6. Step 6: Final answer
    x = 6,524.33

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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.