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Finding the Fourth Proportional to 2,157.92, 3,219.49 and 1,950.32

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Solution

The fourth proportional to 2,157.92, 3,219.49 and 1,950.32 is: 2,909.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.92 : 3,219.49 = 1,950.32 : x
  2. Step 2: Convert to fraction form
    2,157.92/3,219.49 = 1,950.32/x
  3. Step 3: Cross multiply
    2,157.92x = 3,219.49 × 1,950.32
  4. Step 4: Simplify right side
    2,157.92x = 6,279,035.74
  5. Step 5: Solve for x
    x = 6,279,035.74/2,157.92
  6. Step 6: Final answer
    x = 2,909.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.