Home / 8,742.13-13,111.35-2,819.56

Finding the Fourth Proportional to 8,742.13, 13,111.35 and 2,819.56

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Solution

The fourth proportional to 8,742.13, 13,111.35 and 2,819.56 is: 4,228.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.13 : 13,111.35 = 2,819.56 : x
  2. Step 2: Convert to fraction form
    8,742.13/13,111.35 = 2,819.56/x
  3. Step 3: Cross multiply
    8,742.13x = 13,111.35 × 2,819.56
  4. Step 4: Simplify right side
    8,742.13x = 36,968,238.01
  5. Step 5: Solve for x
    x = 36,968,238.01/8,742.13
  6. Step 6: Final answer
    x = 4,228.74

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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.