Home / 7,138.22-10,705.59-2,752.88

Finding the Fourth Proportional to 7,138.22, 10,705.59 and 2,752.88

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Solution

The fourth proportional to 7,138.22, 10,705.59 and 2,752.88 is: 4,128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.22 : 10,705.59 = 2,752.88 : x
  2. Step 2: Convert to fraction form
    7,138.22/10,705.59 = 2,752.88/x
  3. Step 3: Cross multiply
    7,138.22x = 10,705.59 × 2,752.88
  4. Step 4: Simplify right side
    7,138.22x = 29,471,151.07
  5. Step 5: Solve for x
    x = 29,471,151.07/7,138.22
  6. Step 6: Final answer
    x = 4,128.64

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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.