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Finding the Fourth Proportional to 8,656.23, 12,895.02 and 8,118.39

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Solution

The fourth proportional to 8,656.23, 12,895.02 and 8,118.39 is: 12,093.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.23 : 12,895.02 = 8,118.39 : x
  2. Step 2: Convert to fraction form
    8,656.23/12,895.02 = 8,118.39/x
  3. Step 3: Cross multiply
    8,656.23x = 12,895.02 × 8,118.39
  4. Step 4: Simplify right side
    8,656.23x = 104,686,801.42
  5. Step 5: Solve for x
    x = 104,686,801.42/8,656.23
  6. Step 6: Final answer
    x = 12,093.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.