Home / 3,970.13-5,479.25-2,291.94

Finding the Fourth Proportional to 3,970.13, 5,479.25 and 2,291.94

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Solution

The fourth proportional to 3,970.13, 5,479.25 and 2,291.94 is: 3,163.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.13 : 5,479.25 = 2,291.94 : x
  2. Step 2: Convert to fraction form
    3,970.13/5,479.25 = 2,291.94/x
  3. Step 3: Cross multiply
    3,970.13x = 5,479.25 × 2,291.94
  4. Step 4: Simplify right side
    3,970.13x = 12,558,100.79
  5. Step 5: Solve for x
    x = 12,558,100.79/3,970.13
  6. Step 6: Final answer
    x = 3,163.15

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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.