Home / 3,907.02-5,391.82-2,138.63

Finding the Fourth Proportional to 3,907.02, 5,391.82 and 2,138.63

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Solution

The fourth proportional to 3,907.02, 5,391.82 and 2,138.63 is: 2,951.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.02 : 5,391.82 = 2,138.63 : x
  2. Step 2: Convert to fraction form
    3,907.02/5,391.82 = 2,138.63/x
  3. Step 3: Cross multiply
    3,907.02x = 5,391.82 × 2,138.63
  4. Step 4: Simplify right side
    3,907.02x = 11,531,070.35
  5. Step 5: Solve for x
    x = 11,531,070.35/3,907.02
  6. Step 6: Final answer
    x = 2,951.37

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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.