Home / 3,436.70-4,740.12-2,109.38

Finding the Fourth Proportional to 3,436.70, 4,740.12 and 2,109.38

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Solution

The fourth proportional to 3,436.70, 4,740.12 and 2,109.38 is: 2,909.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,436.70 : 4,740.12 = 2,109.38 : x
  2. Step 2: Convert to fraction form
    3,436.70/4,740.12 = 2,109.38/x
  3. Step 3: Cross multiply
    3,436.70x = 4,740.12 × 2,109.38
  4. Step 4: Simplify right side
    3,436.70x = 9,998,690.63
  5. Step 5: Solve for x
    x = 9,998,690.63/3,436.70
  6. Step 6: Final answer
    x = 2,909.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.