Home / 2,490.87-3,436.11-2,019.30

Finding the Fourth Proportional to 2,490.87, 3,436.11 and 2,019.30

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Solution

The fourth proportional to 2,490.87, 3,436.11 and 2,019.30 is: 2,785.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.87 : 3,436.11 = 2,019.30 : x
  2. Step 2: Convert to fraction form
    2,490.87/3,436.11 = 2,019.30/x
  3. Step 3: Cross multiply
    2,490.87x = 3,436.11 × 2,019.30
  4. Step 4: Simplify right side
    2,490.87x = 6,938,550.56
  5. Step 5: Solve for x
    x = 6,938,550.56/2,490.87
  6. Step 6: Final answer
    x = 2,785.59

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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.