Home / 3,860.61-5,322.64-3,151.72

Finding the Fourth Proportional to 3,860.61, 5,322.64 and 3,151.72

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Solution

The fourth proportional to 3,860.61, 5,322.64 and 3,151.72 is: 4,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.61 : 5,322.64 = 3,151.72 : x
  2. Step 2: Convert to fraction form
    3,860.61/5,322.64 = 3,151.72/x
  3. Step 3: Cross multiply
    3,860.61x = 5,322.64 × 3,151.72
  4. Step 4: Simplify right side
    3,860.61x = 16,775,470.94
  5. Step 5: Solve for x
    x = 16,775,470.94/3,860.61
  6. Step 6: Final answer
    x = 4,345.29

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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.