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Finding the Fourth Proportional to 8,656.61, 12,986.28 and 3,035.83

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Solution

The fourth proportional to 8,656.61, 12,986.28 and 3,035.83 is: 4,554.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.61 : 12,986.28 = 3,035.83 : x
  2. Step 2: Convert to fraction form
    8,656.61/12,986.28 = 3,035.83/x
  3. Step 3: Cross multiply
    8,656.61x = 12,986.28 × 3,035.83
  4. Step 4: Simplify right side
    8,656.61x = 39,424,138.41
  5. Step 5: Solve for x
    x = 39,424,138.41/8,656.61
  6. Step 6: Final answer
    x = 4,554.22

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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.