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Finding the Fourth Proportional to 7,398.60, 11,104.20 and 3,019.20

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Solution

The fourth proportional to 7,398.60, 11,104.20 and 3,019.20 is: 4,531.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,398.60 : 11,104.20 = 3,019.20 : x
  2. Step 2: Convert to fraction form
    7,398.60/11,104.20 = 3,019.20/x
  3. Step 3: Cross multiply
    7,398.60x = 11,104.20 × 3,019.20
  4. Step 4: Simplify right side
    7,398.60x = 33,525,800.64
  5. Step 5: Solve for x
    x = 33,525,800.64/7,398.60
  6. Step 6: Final answer
    x = 4,531.37

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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.