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Finding the Fourth Proportional to 8,355.65, 12,536.06 and 3,425.67

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Solution

The fourth proportional to 8,355.65, 12,536.06 and 3,425.67 is: 5,139.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355.65 : 12,536.06 = 3,425.67 : x
  2. Step 2: Convert to fraction form
    8,355.65/12,536.06 = 3,425.67/x
  3. Step 3: Cross multiply
    8,355.65x = 12,536.06 × 3,425.67
  4. Step 4: Simplify right side
    8,355.65x = 42,944,387.53
  5. Step 5: Solve for x
    x = 42,944,387.53/8,355.65
  6. Step 6: Final answer
    x = 5,139.57

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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.