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Finding the Fourth Proportional to 8,706.51, 12,015.09 and 4,727.69

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Solution

The fourth proportional to 8,706.51, 12,015.09 and 4,727.69 is: 6,524.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.51 : 12,015.09 = 4,727.69 : x
  2. Step 2: Convert to fraction form
    8,706.51/12,015.09 = 4,727.69/x
  3. Step 3: Cross multiply
    8,706.51x = 12,015.09 × 4,727.69
  4. Step 4: Simplify right side
    8,706.51x = 56,803,548.95
  5. Step 5: Solve for x
    x = 56,803,548.95/8,706.51
  6. Step 6: Final answer
    x = 6,524.27

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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.