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Finding the Fourth Proportional to 2,382.85, 3,574.41 and 739.63

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Solution

The fourth proportional to 2,382.85, 3,574.41 and 739.63 is: 1,109.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.85 : 3,574.41 = 739.63 : x
  2. Step 2: Convert to fraction form
    2,382.85/3,574.41 = 739.63/x
  3. Step 3: Cross multiply
    2,382.85x = 3,574.41 × 739.63
  4. Step 4: Simplify right side
    2,382.85x = 2,643,740.87
  5. Step 5: Solve for x
    x = 2,643,740.87/2,382.85
  6. Step 6: Final answer
    x = 1,109.49

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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.