Home / 2,135.20-3,199.32-2,054.20

Finding the Fourth Proportional to 2,135.20, 3,199.32 and 2,054.20

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Solution

The fourth proportional to 2,135.20, 3,199.32 and 2,054.20 is: 3,077.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.20 : 3,199.32 = 2,054.20 : x
  2. Step 2: Convert to fraction form
    2,135.20/3,199.32 = 2,054.20/x
  3. Step 3: Cross multiply
    2,135.20x = 3,199.32 × 2,054.20
  4. Step 4: Simplify right side
    2,135.20x = 6,572,043.14
  5. Step 5: Solve for x
    x = 6,572,043.14/2,135.20
  6. Step 6: Final answer
    x = 3,077.95

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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.