Home / 7,103.52-10,657.20-2,720.80

Finding the Fourth Proportional to 7,103.52, 10,657.20 and 2,720.80

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Solution

The fourth proportional to 7,103.52, 10,657.20 and 2,720.80 is: 4,081.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,103.52 : 10,657.20 = 2,720.80 : x
  2. Step 2: Convert to fraction form
    7,103.52/10,657.20 = 2,720.80/x
  3. Step 3: Cross multiply
    7,103.52x = 10,657.20 × 2,720.80
  4. Step 4: Simplify right side
    7,103.52x = 28,996,109.76
  5. Step 5: Solve for x
    x = 28,996,109.76/7,103.52
  6. Step 6: Final answer
    x = 4,081.94

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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.