Home / 2,193.42-3,025.74-1,309.05

Finding the Fourth Proportional to 2,193.42, 3,025.74 and 1,309.05

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Solution

The fourth proportional to 2,193.42, 3,025.74 and 1,309.05 is: 1,805.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.42 : 3,025.74 = 1,309.05 : x
  2. Step 2: Convert to fraction form
    2,193.42/3,025.74 = 1,309.05/x
  3. Step 3: Cross multiply
    2,193.42x = 3,025.74 × 1,309.05
  4. Step 4: Simplify right side
    2,193.42x = 3,960,844.95
  5. Step 5: Solve for x
    x = 3,960,844.95/2,193.42
  6. Step 6: Final answer
    x = 1,805.79

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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.