Home / 8,742.75-13,111.04-2,819.40

Finding the Fourth Proportional to 8,742.75, 13,111.04 and 2,819.40

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Solution

The fourth proportional to 8,742.75, 13,111.04 and 2,819.40 is: 4,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.75 : 13,111.04 = 2,819.40 : x
  2. Step 2: Convert to fraction form
    8,742.75/13,111.04 = 2,819.40/x
  3. Step 3: Cross multiply
    8,742.75x = 13,111.04 × 2,819.40
  4. Step 4: Simplify right side
    8,742.75x = 36,965,252.08
  5. Step 5: Solve for x
    x = 36,965,252.08/8,742.75
  6. Step 6: Final answer
    x = 4,228.10

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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.