Home / 3,931.34-5,425.28-2,162.95

Finding the Fourth Proportional to 3,931.34, 5,425.28 and 2,162.95

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Solution

The fourth proportional to 3,931.34, 5,425.28 and 2,162.95 is: 2,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.34 : 5,425.28 = 2,162.95 : x
  2. Step 2: Convert to fraction form
    3,931.34/5,425.28 = 2,162.95/x
  3. Step 3: Cross multiply
    3,931.34x = 5,425.28 × 2,162.95
  4. Step 4: Simplify right side
    3,931.34x = 11,734,623.63
  5. Step 5: Solve for x
    x = 11,734,623.63/3,931.34
  6. Step 6: Final answer
    x = 2,984.90

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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.