Home / 2,191.40-3,023.31-1,340.99

Finding the Fourth Proportional to 2,191.40, 3,023.31 and 1,340.99

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Solution

The fourth proportional to 2,191.40, 3,023.31 and 1,340.99 is: 1,850.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.40 : 3,023.31 = 1,340.99 : x
  2. Step 2: Convert to fraction form
    2,191.40/3,023.31 = 1,340.99/x
  3. Step 3: Cross multiply
    2,191.40x = 3,023.31 × 1,340.99
  4. Step 4: Simplify right side
    2,191.40x = 4,054,228.48
  5. Step 5: Solve for x
    x = 4,054,228.48/2,191.40
  6. Step 6: Final answer
    x = 1,850.06

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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.