Home / 7,824.10-11,732.31-3,870.79

Finding the Fourth Proportional to 7,824.10, 11,732.31 and 3,870.79

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Solution

The fourth proportional to 7,824.10, 11,732.31 and 3,870.79 is: 5,804.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,824.10 : 11,732.31 = 3,870.79 : x
  2. Step 2: Convert to fraction form
    7,824.10/11,732.31 = 3,870.79/x
  3. Step 3: Cross multiply
    7,824.10x = 11,732.31 × 3,870.79
  4. Step 4: Simplify right side
    7,824.10x = 45,413,308.22
  5. Step 5: Solve for x
    x = 45,413,308.22/7,824.10
  6. Step 6: Final answer
    x = 5,804.29

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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.