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Finding the Fourth Proportional to 8,560.33, 12,840.53 and 3,012.39

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Solution

The fourth proportional to 8,560.33, 12,840.53 and 3,012.39 is: 4,518.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560.33 : 12,840.53 = 3,012.39 : x
  2. Step 2: Convert to fraction form
    8,560.33/12,840.53 = 3,012.39/x
  3. Step 3: Cross multiply
    8,560.33x = 12,840.53 × 3,012.39
  4. Step 4: Simplify right side
    8,560.33x = 38,680,669.10
  5. Step 5: Solve for x
    x = 38,680,669.10/8,560.33
  6. Step 6: Final answer
    x = 4,518.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.