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Finding the Fourth Proportional to 1,382.27, 1,907.58 and 752.85

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Solution

The fourth proportional to 1,382.27, 1,907.58 and 752.85 is: 1,038.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.27 : 1,907.58 = 752.85 : x
  2. Step 2: Convert to fraction form
    1,382.27/1,907.58 = 752.85/x
  3. Step 3: Cross multiply
    1,382.27x = 1,907.58 × 752.85
  4. Step 4: Simplify right side
    1,382.27x = 1,436,121.60
  5. Step 5: Solve for x
    x = 1,436,121.60/1,382.27
  6. Step 6: Final answer
    x = 1,038.96

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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.