Home / 7,619.88-11,397.01-6,781.53

Finding the Fourth Proportional to 7,619.88, 11,397.01 and 6,781.53

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Solution

The fourth proportional to 7,619.88, 11,397.01 and 6,781.53 is: 10,143.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.88 : 11,397.01 = 6,781.53 : x
  2. Step 2: Convert to fraction form
    7,619.88/11,397.01 = 6,781.53/x
  3. Step 3: Cross multiply
    7,619.88x = 11,397.01 × 6,781.53
  4. Step 4: Simplify right side
    7,619.88x = 77,289,165.23
  5. Step 5: Solve for x
    x = 77,289,165.23/7,619.88
  6. Step 6: Final answer
    x = 10,143.09

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1.5x scale

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.