Home / 8,112.64-11,198.38-5,130.50

Finding the Fourth Proportional to 8,112.64, 11,198.38 and 5,130.50

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Solution

The fourth proportional to 8,112.64, 11,198.38 and 5,130.50 is: 7,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.64 : 11,198.38 = 5,130.50 : x
  2. Step 2: Convert to fraction form
    8,112.64/11,198.38 = 5,130.50/x
  3. Step 3: Cross multiply
    8,112.64x = 11,198.38 × 5,130.50
  4. Step 4: Simplify right side
    8,112.64x = 57,453,288.59
  5. Step 5: Solve for x
    x = 57,453,288.59/8,112.64
  6. Step 6: Final answer
    x = 7,081.95

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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.