Home / 2,191.53-3,023.69-1,247.29

Finding the Fourth Proportional to 2,191.53, 3,023.69 and 1,247.29

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Solution

The fourth proportional to 2,191.53, 3,023.69 and 1,247.29 is: 1,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.53 : 3,023.69 = 1,247.29 : x
  2. Step 2: Convert to fraction form
    2,191.53/3,023.69 = 1,247.29/x
  3. Step 3: Cross multiply
    2,191.53x = 3,023.69 × 1,247.29
  4. Step 4: Simplify right side
    2,191.53x = 3,771,424.21
  5. Step 5: Solve for x
    x = 3,771,424.21/2,191.53
  6. Step 6: Final answer
    x = 1,720.91

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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.