Home / 3,970.61-5,479.05-2,292.56

Finding the Fourth Proportional to 3,970.61, 5,479.05 and 2,292.56

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Solution

The fourth proportional to 3,970.61, 5,479.05 and 2,292.56 is: 3,163.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.61 : 5,479.05 = 2,292.56 : x
  2. Step 2: Convert to fraction form
    3,970.61/5,479.05 = 2,292.56/x
  3. Step 3: Cross multiply
    3,970.61x = 5,479.05 × 2,292.56
  4. Step 4: Simplify right side
    3,970.61x = 12,561,050.87
  5. Step 5: Solve for x
    x = 12,561,050.87/3,970.61
  6. Step 6: Final answer
    x = 3,163.51

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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.