Home / 2,191.60-3,023.73-1,247.35

Finding the Fourth Proportional to 2,191.60, 3,023.73 and 1,247.35

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Solution

The fourth proportional to 2,191.60, 3,023.73 and 1,247.35 is: 1,720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.60 : 3,023.73 = 1,247.35 : x
  2. Step 2: Convert to fraction form
    2,191.60/3,023.73 = 1,247.35/x
  3. Step 3: Cross multiply
    2,191.60x = 3,023.73 × 1,247.35
  4. Step 4: Simplify right side
    2,191.60x = 3,771,649.62
  5. Step 5: Solve for x
    x = 3,771,649.62/2,191.60
  6. Step 6: Final answer
    x = 1,720.96

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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.