Home / 3,405.70-5,113.35-2,109.70

Finding the Fourth Proportional to 3,405.70, 5,113.35 and 2,109.70

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Solution

The fourth proportional to 3,405.70, 5,113.35 and 2,109.70 is: 3,167.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.70 : 5,113.35 = 2,109.70 : x
  2. Step 2: Convert to fraction form
    3,405.70/5,113.35 = 2,109.70/x
  3. Step 3: Cross multiply
    3,405.70x = 5,113.35 × 2,109.70
  4. Step 4: Simplify right side
    3,405.70x = 10,787,634.50
  5. Step 5: Solve for x
    x = 10,787,634.50/3,405.70
  6. Step 6: Final answer
    x = 3,167.52

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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.