Home / 9,018.20-12,442.97-5,239.12

Finding the Fourth Proportional to 9,018.20, 12,442.97 and 5,239.12

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Solution

The fourth proportional to 9,018.20, 12,442.97 and 5,239.12 is: 7,228.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,018.20 : 12,442.97 = 5,239.12 : x
  2. Step 2: Convert to fraction form
    9,018.20/12,442.97 = 5,239.12/x
  3. Step 3: Cross multiply
    9,018.20x = 12,442.97 × 5,239.12
  4. Step 4: Simplify right side
    9,018.20x = 65,190,194.98
  5. Step 5: Solve for x
    x = 65,190,194.98/9,018.20
  6. Step 6: Final answer
    x = 7,228.74

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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.