Home / 6,620.12-9,134.02-3,930.63

Finding the Fourth Proportional to 6,620.12, 9,134.02 and 3,930.63

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Solution

The fourth proportional to 6,620.12, 9,134.02 and 3,930.63 is: 5,423.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.12 : 9,134.02 = 3,930.63 : x
  2. Step 2: Convert to fraction form
    6,620.12/9,134.02 = 3,930.63/x
  3. Step 3: Cross multiply
    6,620.12x = 9,134.02 × 3,930.63
  4. Step 4: Simplify right side
    6,620.12x = 35,902,453.03
  5. Step 5: Solve for x
    x = 35,902,453.03/6,620.12
  6. Step 6: Final answer
    x = 5,423.23

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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.