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Finding the Fourth Proportional to 7,622.88, 11,424.48 and 7,540.32

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Solution

The fourth proportional to 7,622.88, 11,424.48 and 7,540.32 is: 11,300.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,622.88 : 11,424.48 = 7,540.32 : x
  2. Step 2: Convert to fraction form
    7,622.88/11,424.48 = 7,540.32/x
  3. Step 3: Cross multiply
    7,622.88x = 11,424.48 × 7,540.32
  4. Step 4: Simplify right side
    7,622.88x = 86,144,235.03
  5. Step 5: Solve for x
    x = 86,144,235.03/7,622.88
  6. Step 6: Final answer
    x = 11,300.75

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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.