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Finding the Fourth Proportional to 9,241.60, 13,860.80 and 3,395.20

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Solution

The fourth proportional to 9,241.60, 13,860.80 and 3,395.20 is: 5,092.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,241.60 : 13,860.80 = 3,395.20 : x
  2. Step 2: Convert to fraction form
    9,241.60/13,860.80 = 3,395.20/x
  3. Step 3: Cross multiply
    9,241.60x = 13,860.80 × 3,395.20
  4. Step 4: Simplify right side
    9,241.60x = 47,060,188.16
  5. Step 5: Solve for x
    x = 47,060,188.16/9,241.60
  6. Step 6: Final answer
    x = 5,092.21

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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.