Home / 7,538.05-11,307.75-1,991.32

Finding the Fourth Proportional to 7,538.05, 11,307.75 and 1,991.32

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Solution

The fourth proportional to 7,538.05, 11,307.75 and 1,991.32 is: 2,987.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.05 : 11,307.75 = 1,991.32 : x
  2. Step 2: Convert to fraction form
    7,538.05/11,307.75 = 1,991.32/x
  3. Step 3: Cross multiply
    7,538.05x = 11,307.75 × 1,991.32
  4. Step 4: Simplify right side
    7,538.05x = 22,517,348.73
  5. Step 5: Solve for x
    x = 22,517,348.73/7,538.05
  6. Step 6: Final answer
    x = 2,987.16

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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.