Home / 9,219.84-12,719.88-5,238.96

Finding the Fourth Proportional to 9,219.84, 12,719.88 and 5,238.96

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Solution

The fourth proportional to 9,219.84, 12,719.88 and 5,238.96 is: 7,227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.84 : 12,719.88 = 5,238.96 : x
  2. Step 2: Convert to fraction form
    9,219.84/12,719.88 = 5,238.96/x
  3. Step 3: Cross multiply
    9,219.84x = 12,719.88 × 5,238.96
  4. Step 4: Simplify right side
    9,219.84x = 66,638,942.52
  5. Step 5: Solve for x
    x = 66,638,942.52/9,219.84
  6. Step 6: Final answer
    x = 7,227.78

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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.