Home / 8,316.22-12,470.65-3,118.45

Finding the Fourth Proportional to 8,316.22, 12,470.65 and 3,118.45

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Solution

The fourth proportional to 8,316.22, 12,470.65 and 3,118.45 is: 4,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.22 : 12,470.65 = 3,118.45 : x
  2. Step 2: Convert to fraction form
    8,316.22/12,470.65 = 3,118.45/x
  3. Step 3: Cross multiply
    8,316.22x = 12,470.65 × 3,118.45
  4. Step 4: Simplify right side
    8,316.22x = 38,889,098.49
  5. Step 5: Solve for x
    x = 38,889,098.49/8,316.22
  6. Step 6: Final answer
    x = 4,676.30

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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.