Home / 9,219.57-12,722.90-5,240.43

Finding the Fourth Proportional to 9,219.57, 12,722.90 and 5,240.43

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Solution

The fourth proportional to 9,219.57, 12,722.90 and 5,240.43 is: 7,231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.57 : 12,722.90 = 5,240.43 : x
  2. Step 2: Convert to fraction form
    9,219.57/12,722.90 = 5,240.43/x
  3. Step 3: Cross multiply
    9,219.57x = 12,722.90 × 5,240.43
  4. Step 4: Simplify right side
    9,219.57x = 66,673,392.93
  5. Step 5: Solve for x
    x = 66,673,392.93/9,219.57
  6. Step 6: Final answer
    x = 7,231.72

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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.