Home / 5,211.78-7,194.51-3,115.50

Finding the Fourth Proportional to 5,211.78, 7,194.51 and 3,115.50

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Solution

The fourth proportional to 5,211.78, 7,194.51 and 3,115.50 is: 4,300.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.78 : 7,194.51 = 3,115.50 : x
  2. Step 2: Convert to fraction form
    5,211.78/7,194.51 = 3,115.50/x
  3. Step 3: Cross multiply
    5,211.78x = 7,194.51 × 3,115.50
  4. Step 4: Simplify right side
    5,211.78x = 22,414,495.91
  5. Step 5: Solve for x
    x = 22,414,495.91/5,211.78
  6. Step 6: Final answer
    x = 4,300.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.