Home / 3,390.35-5,084.36-1,611.21

Finding the Fourth Proportional to 3,390.35, 5,084.36 and 1,611.21

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Solution

The fourth proportional to 3,390.35, 5,084.36 and 1,611.21 is: 2,416.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.35 : 5,084.36 = 1,611.21 : x
  2. Step 2: Convert to fraction form
    3,390.35/5,084.36 = 1,611.21/x
  3. Step 3: Cross multiply
    3,390.35x = 5,084.36 × 1,611.21
  4. Step 4: Simplify right side
    3,390.35x = 8,191,938.20
  5. Step 5: Solve for x
    x = 8,191,938.20/3,390.35
  6. Step 6: Final answer
    x = 2,416.25

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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.