Home / 7,121.15-10,679.02-2,845.57

Finding the Fourth Proportional to 7,121.15, 10,679.02 and 2,845.57

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Solution

The fourth proportional to 7,121.15, 10,679.02 and 2,845.57 is: 4,267.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.15 : 10,679.02 = 2,845.57 : x
  2. Step 2: Convert to fraction form
    7,121.15/10,679.02 = 2,845.57/x
  3. Step 3: Cross multiply
    7,121.15x = 10,679.02 × 2,845.57
  4. Step 4: Simplify right side
    7,121.15x = 30,387,898.94
  5. Step 5: Solve for x
    x = 30,387,898.94/7,121.15
  6. Step 6: Final answer
    x = 4,267.27

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1.5x scale

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.