Home / 6,721.10-10,085.10-5,087.66

Finding the Fourth Proportional to 6,721.10, 10,085.10 and 5,087.66

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Solution

The fourth proportional to 6,721.10, 10,085.10 and 5,087.66 is: 7,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.10 : 10,085.10 = 5,087.66 : x
  2. Step 2: Convert to fraction form
    6,721.10/10,085.10 = 5,087.66/x
  3. Step 3: Cross multiply
    6,721.10x = 10,085.10 × 5,087.66
  4. Step 4: Simplify right side
    6,721.10x = 51,309,559.87
  5. Step 5: Solve for x
    x = 51,309,559.87/6,721.10
  6. Step 6: Final answer
    x = 7,634.10

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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.