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Finding the Fourth Proportional to 3,344.40, 5,018.40 and 1,396.80

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Solution

The fourth proportional to 3,344.40, 5,018.40 and 1,396.80 is: 2,095.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,344.40 : 5,018.40 = 1,396.80 : x
  2. Step 2: Convert to fraction form
    3,344.40/5,018.40 = 1,396.80/x
  3. Step 3: Cross multiply
    3,344.40x = 5,018.40 × 1,396.80
  4. Step 4: Simplify right side
    3,344.40x = 7,009,701.12
  5. Step 5: Solve for x
    x = 7,009,701.12/3,344.40
  6. Step 6: Final answer
    x = 2,095.95

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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.