Home / 8,316.46-12,479.67-3,317.95

Finding the Fourth Proportional to 8,316.46, 12,479.67 and 3,317.95

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Solution

The fourth proportional to 8,316.46, 12,479.67 and 3,317.95 is: 4,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.46 : 12,479.67 = 3,317.95 : x
  2. Step 2: Convert to fraction form
    8,316.46/12,479.67 = 3,317.95/x
  3. Step 3: Cross multiply
    8,316.46x = 12,479.67 × 3,317.95
  4. Step 4: Simplify right side
    8,316.46x = 41,406,921.08
  5. Step 5: Solve for x
    x = 41,406,921.08/8,316.46
  6. Step 6: Final answer
    x = 4,978.91

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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.