Home / 5,728.38-7,907.40-3,371.28

Finding the Fourth Proportional to 5,728.38, 7,907.40 and 3,371.28

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Solution

The fourth proportional to 5,728.38, 7,907.40 and 3,371.28 is: 4,653.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,728.38 : 7,907.40 = 3,371.28 : x
  2. Step 2: Convert to fraction form
    5,728.38/7,907.40 = 3,371.28/x
  3. Step 3: Cross multiply
    5,728.38x = 7,907.40 × 3,371.28
  4. Step 4: Simplify right side
    5,728.38x = 26,658,059.47
  5. Step 5: Solve for x
    x = 26,658,059.47/5,728.38
  6. Step 6: Final answer
    x = 4,653.68

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Half scale
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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.