Home / 7,143.34-9,857.94-3,999.52

Finding the Fourth Proportional to 7,143.34, 9,857.94 and 3,999.52

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Solution

The fourth proportional to 7,143.34, 9,857.94 and 3,999.52 is: 5,519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.34 : 9,857.94 = 3,999.52 : x
  2. Step 2: Convert to fraction form
    7,143.34/9,857.94 = 3,999.52/x
  3. Step 3: Cross multiply
    7,143.34x = 9,857.94 × 3,999.52
  4. Step 4: Simplify right side
    7,143.34x = 39,427,028.19
  5. Step 5: Solve for x
    x = 39,427,028.19/7,143.34
  6. Step 6: Final answer
    x = 5,519.41

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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.