Home / 7,620.88-11,398.51-6,782.53

Finding the Fourth Proportional to 7,620.88, 11,398.51 and 6,782.53

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Solution

The fourth proportional to 7,620.88, 11,398.51 and 6,782.53 is: 10,144.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.88 : 11,398.51 = 6,782.53 : x
  2. Step 2: Convert to fraction form
    7,620.88/11,398.51 = 6,782.53/x
  3. Step 3: Cross multiply
    7,620.88x = 11,398.51 × 6,782.53
  4. Step 4: Simplify right side
    7,620.88x = 77,310,736.03
  5. Step 5: Solve for x
    x = 77,310,736.03/7,620.88
  6. Step 6: Final answer
    x = 10,144.59

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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.