Home / 2,191.46-3,024.07-1,247.20

Finding the Fourth Proportional to 2,191.46, 3,024.07 and 1,247.20

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Solution

The fourth proportional to 2,191.46, 3,024.07 and 1,247.20 is: 1,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.46 : 3,024.07 = 1,247.20 : x
  2. Step 2: Convert to fraction form
    2,191.46/3,024.07 = 1,247.20/x
  3. Step 3: Cross multiply
    2,191.46x = 3,024.07 × 1,247.20
  4. Step 4: Simplify right side
    2,191.46x = 3,771,609.43
  5. Step 5: Solve for x
    x = 3,771,609.43/2,191.46
  6. Step 6: Final answer
    x = 1,721.05

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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.