Home / 7,142.94-10,721.34-3,447.77

Finding the Fourth Proportional to 7,142.94, 10,721.34 and 3,447.77

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Solution

The fourth proportional to 7,142.94, 10,721.34 and 3,447.77 is: 5,175.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.94 : 10,721.34 = 3,447.77 : x
  2. Step 2: Convert to fraction form
    7,142.94/10,721.34 = 3,447.77/x
  3. Step 3: Cross multiply
    7,142.94x = 10,721.34 × 3,447.77
  4. Step 4: Simplify right side
    7,142.94x = 36,964,688.08
  5. Step 5: Solve for x
    x = 36,964,688.08/7,142.94
  6. Step 6: Final answer
    x = 5,175.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.