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Finding the Fourth Proportional to 9,993.60, 14,990.40 and 3,419.84

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Solution

The fourth proportional to 9,993.60, 14,990.40 and 3,419.84 is: 5,129.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993.60 : 14,990.40 = 3,419.84 : x
  2. Step 2: Convert to fraction form
    9,993.60/14,990.40 = 3,419.84/x
  3. Step 3: Cross multiply
    9,993.60x = 14,990.40 × 3,419.84
  4. Step 4: Simplify right side
    9,993.60x = 51,264,694.58
  5. Step 5: Solve for x
    x = 51,264,694.58/9,993.60
  6. Step 6: Final answer
    x = 5,129.75

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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.