Home / 6,921.72-10,376.40-2,538.15

Finding the Fourth Proportional to 6,921.72, 10,376.40 and 2,538.15

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Solution

The fourth proportional to 6,921.72, 10,376.40 and 2,538.15 is: 3,804.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.72 : 10,376.40 = 2,538.15 : x
  2. Step 2: Convert to fraction form
    6,921.72/10,376.40 = 2,538.15/x
  3. Step 3: Cross multiply
    6,921.72x = 10,376.40 × 2,538.15
  4. Step 4: Simplify right side
    6,921.72x = 26,336,859.66
  5. Step 5: Solve for x
    x = 26,336,859.66/6,921.72
  6. Step 6: Final answer
    x = 3,804.96

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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.