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Finding the Fourth Proportional to 8,706.95, 12,015.40 and 4,728.03

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Solution

The fourth proportional to 8,706.95, 12,015.40 and 4,728.03 is: 6,524.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.95 : 12,015.40 = 4,728.03 : x
  2. Step 2: Convert to fraction form
    8,706.95/12,015.40 = 4,728.03/x
  3. Step 3: Cross multiply
    8,706.95x = 12,015.40 × 4,728.03
  4. Step 4: Simplify right side
    8,706.95x = 56,809,171.66
  5. Step 5: Solve for x
    x = 56,809,171.66/8,706.95
  6. Step 6: Final answer
    x = 6,524.58

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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.