Home / 7,719.76-11,579.10-4,422.52

Finding the Fourth Proportional to 7,719.76, 11,579.10 and 4,422.52

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Solution

The fourth proportional to 7,719.76, 11,579.10 and 4,422.52 is: 6,633.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.76 : 11,579.10 = 4,422.52 : x
  2. Step 2: Convert to fraction form
    7,719.76/11,579.10 = 4,422.52/x
  3. Step 3: Cross multiply
    7,719.76x = 11,579.10 × 4,422.52
  4. Step 4: Simplify right side
    7,719.76x = 51,208,801.33
  5. Step 5: Solve for x
    x = 51,208,801.33/7,719.76
  6. Step 6: Final answer
    x = 6,633.47

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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.