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Finding the Fourth Proportional to 3,457.32, 4,770.92 and 1,965.20

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Solution

The fourth proportional to 3,457.32, 4,770.92 and 1,965.20 is: 2,711.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,457.32 : 4,770.92 = 1,965.20 : x
  2. Step 2: Convert to fraction form
    3,457.32/4,770.92 = 1,965.20/x
  3. Step 3: Cross multiply
    3,457.32x = 4,770.92 × 1,965.20
  4. Step 4: Simplify right side
    3,457.32x = 9,375,811.98
  5. Step 5: Solve for x
    x = 9,375,811.98/3,457.32
  6. Step 6: Final answer
    x = 2,711.87

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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.