Home / 7,719.20-11,576.10-4,020.20

Finding the Fourth Proportional to 7,719.20, 11,576.10 and 4,020.20

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Solution

The fourth proportional to 7,719.20, 11,576.10 and 4,020.20 is: 6,028.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.20 : 11,576.10 = 4,020.20 : x
  2. Step 2: Convert to fraction form
    7,719.20/11,576.10 = 4,020.20/x
  3. Step 3: Cross multiply
    7,719.20x = 11,576.10 × 4,020.20
  4. Step 4: Simplify right side
    7,719.20x = 46,538,237.22
  5. Step 5: Solve for x
    x = 46,538,237.22/7,719.20
  6. Step 6: Final answer
    x = 6,028.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.