Home / 6,987.88-10,480.44-3,428.47

Finding the Fourth Proportional to 6,987.88, 10,480.44 and 3,428.47

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Solution

The fourth proportional to 6,987.88, 10,480.44 and 3,428.47 is: 5,142.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.88 : 10,480.44 = 3,428.47 : x
  2. Step 2: Convert to fraction form
    6,987.88/10,480.44 = 3,428.47/x
  3. Step 3: Cross multiply
    6,987.88x = 10,480.44 × 3,428.47
  4. Step 4: Simplify right side
    6,987.88x = 35,931,874.13
  5. Step 5: Solve for x
    x = 35,931,874.13/6,987.88
  6. Step 6: Final answer
    x = 5,142.03

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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.