Home / 2,191.19-3,023.73-1,247.00

Finding the Fourth Proportional to 2,191.19, 3,023.73 and 1,247.00

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Solution

The fourth proportional to 2,191.19, 3,023.73 and 1,247.00 is: 1,720.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.19 : 3,023.73 = 1,247.00 : x
  2. Step 2: Convert to fraction form
    2,191.19/3,023.73 = 1,247.00/x
  3. Step 3: Cross multiply
    2,191.19x = 3,023.73 × 1,247.00
  4. Step 4: Simplify right side
    2,191.19x = 3,770,576.19
  5. Step 5: Solve for x
    x = 3,770,576.19/2,191.19
  6. Step 6: Final answer
    x = 1,720.79

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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.