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Finding the Fourth Proportional to 3,720.38, 5,574.53 and 1,965.29

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Solution

The fourth proportional to 3,720.38, 5,574.53 and 1,965.29 is: 2,944.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.38 : 5,574.53 = 1,965.29 : x
  2. Step 2: Convert to fraction form
    3,720.38/5,574.53 = 1,965.29/x
  3. Step 3: Cross multiply
    3,720.38x = 5,574.53 × 1,965.29
  4. Step 4: Simplify right side
    3,720.38x = 10,955,568.06
  5. Step 5: Solve for x
    x = 10,955,568.06/3,720.38
  6. Step 6: Final answer
    x = 2,944.74

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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.