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Finding the Fourth Proportional to 2,907.38, 4,012.36 and 1,728.38

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Solution

The fourth proportional to 2,907.38, 4,012.36 and 1,728.38 is: 2,385.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.38 : 4,012.36 = 1,728.38 : x
  2. Step 2: Convert to fraction form
    2,907.38/4,012.36 = 1,728.38/x
  3. Step 3: Cross multiply
    2,907.38x = 4,012.36 × 1,728.38
  4. Step 4: Simplify right side
    2,907.38x = 6,934,882.78
  5. Step 5: Solve for x
    x = 6,934,882.78/2,907.38
  6. Step 6: Final answer
    x = 2,385.27

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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.