Home / 3,927.62-5,420.08-2,135.09

Finding the Fourth Proportional to 3,927.62, 5,420.08 and 2,135.09

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Solution

The fourth proportional to 3,927.62, 5,420.08 and 2,135.09 is: 2,946.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.62 : 5,420.08 = 2,135.09 : x
  2. Step 2: Convert to fraction form
    3,927.62/5,420.08 = 2,135.09/x
  3. Step 3: Cross multiply
    3,927.62x = 5,420.08 × 2,135.09
  4. Step 4: Simplify right side
    3,927.62x = 11,572,388.99
  5. Step 5: Solve for x
    x = 11,572,388.99/3,927.62
  6. Step 6: Final answer
    x = 2,946.41

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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.