Home / 8,018.20-12,080.76-7,239.08

Finding the Fourth Proportional to 8,018.20, 12,080.76 and 7,239.08

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Solution

The fourth proportional to 8,018.20, 12,080.76 and 7,239.08 is: 10,906.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,018.20 : 12,080.76 = 7,239.08 : x
  2. Step 2: Convert to fraction form
    8,018.20/12,080.76 = 7,239.08/x
  3. Step 3: Cross multiply
    8,018.20x = 12,080.76 × 7,239.08
  4. Step 4: Simplify right side
    8,018.20x = 87,453,588.10
  5. Step 5: Solve for x
    x = 87,453,588.10/8,018.20
  6. Step 6: Final answer
    x = 10,906.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.