Home / 3,721.04-5,135.18-2,127.95

Finding the Fourth Proportional to 3,721.04, 5,135.18 and 2,127.95

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Solution

The fourth proportional to 3,721.04, 5,135.18 and 2,127.95 is: 2,936.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.04 : 5,135.18 = 2,127.95 : x
  2. Step 2: Convert to fraction form
    3,721.04/5,135.18 = 2,127.95/x
  3. Step 3: Cross multiply
    3,721.04x = 5,135.18 × 2,127.95
  4. Step 4: Simplify right side
    3,721.04x = 10,927,369.97
  5. Step 5: Solve for x
    x = 10,927,369.97/3,721.04
  6. Step 6: Final answer
    x = 2,936.65

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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.