Home / 2,130.91-3,197.34-961.22

Finding the Fourth Proportional to 2,130.91, 3,197.34 and 961.22

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Solution

The fourth proportional to 2,130.91, 3,197.34 and 961.22 is: 1,442.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.91 : 3,197.34 = 961.22 : x
  2. Step 2: Convert to fraction form
    2,130.91/3,197.34 = 961.22/x
  3. Step 3: Cross multiply
    2,130.91x = 3,197.34 × 961.22
  4. Step 4: Simplify right side
    2,130.91x = 3,073,355.15
  5. Step 5: Solve for x
    x = 3,073,355.15/2,130.91
  6. Step 6: Final answer
    x = 1,442.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.