Home / 8,668.10-12,994.35-3,120.14

Finding the Fourth Proportional to 8,668.10, 12,994.35 and 3,120.14

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Solution

The fourth proportional to 8,668.10, 12,994.35 and 3,120.14 is: 4,677.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.10 : 12,994.35 = 3,120.14 : x
  2. Step 2: Convert to fraction form
    8,668.10/12,994.35 = 3,120.14/x
  3. Step 3: Cross multiply
    8,668.10x = 12,994.35 × 3,120.14
  4. Step 4: Simplify right side
    8,668.10x = 40,544,191.21
  5. Step 5: Solve for x
    x = 40,544,191.21/8,668.10
  6. Step 6: Final answer
    x = 4,677.40

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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.