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Finding the Fourth Proportional to 8,316.86, 12,483.72 and 4,159.84

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Solution

The fourth proportional to 8,316.86, 12,483.72 and 4,159.84 is: 6,243.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.86 : 12,483.72 = 4,159.84 : x
  2. Step 2: Convert to fraction form
    8,316.86/12,483.72 = 4,159.84/x
  3. Step 3: Cross multiply
    8,316.86x = 12,483.72 × 4,159.84
  4. Step 4: Simplify right side
    8,316.86x = 51,930,277.80
  5. Step 5: Solve for x
    x = 51,930,277.80/8,316.86
  6. Step 6: Final answer
    x = 6,243.98

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1.5x scale

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.