Home / 3,919.76-5,407.32-2,325.71

Finding the Fourth Proportional to 3,919.76, 5,407.32 and 2,325.71

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Solution

The fourth proportional to 3,919.76, 5,407.32 and 2,325.71 is: 3,208.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.76 : 5,407.32 = 2,325.71 : x
  2. Step 2: Convert to fraction form
    3,919.76/5,407.32 = 2,325.71/x
  3. Step 3: Cross multiply
    3,919.76x = 5,407.32 × 2,325.71
  4. Step 4: Simplify right side
    3,919.76x = 12,575,858.20
  5. Step 5: Solve for x
    x = 12,575,858.20/3,919.76
  6. Step 6: Final answer
    x = 3,208.32

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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.