Home / 9,198.79-12,694.57-5,220.50

Finding the Fourth Proportional to 9,198.79, 12,694.57 and 5,220.50

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Solution

The fourth proportional to 9,198.79, 12,694.57 and 5,220.50 is: 7,204.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,198.79 : 12,694.57 = 5,220.50 : x
  2. Step 2: Convert to fraction form
    9,198.79/12,694.57 = 5,220.50/x
  3. Step 3: Cross multiply
    9,198.79x = 12,694.57 × 5,220.50
  4. Step 4: Simplify right side
    9,198.79x = 66,271,926.16
  5. Step 5: Solve for x
    x = 66,271,926.16/9,198.79
  6. Step 6: Final answer
    x = 7,204.42

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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.