Home / 7,138.76-10,704.36-2,518.52

Finding the Fourth Proportional to 7,138.76, 10,704.36 and 2,518.52

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Solution

The fourth proportional to 7,138.76, 10,704.36 and 2,518.52 is: 3,776.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.76 : 10,704.36 = 2,518.52 : x
  2. Step 2: Convert to fraction form
    7,138.76/10,704.36 = 2,518.52/x
  3. Step 3: Cross multiply
    7,138.76x = 10,704.36 × 2,518.52
  4. Step 4: Simplify right side
    7,138.76x = 26,959,144.75
  5. Step 5: Solve for x
    x = 26,959,144.75/7,138.76
  6. Step 6: Final answer
    x = 3,776.45

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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.