Home / 3,930.96-5,422.32-2,358

Finding the Fourth Proportional to 3,930.96, 5,422.32 and 2,358

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Solution

The fourth proportional to 3,930.96, 5,422.32 and 2,358 is: 3,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.96 : 5,422.32 = 2,358 : x
  2. Step 2: Convert to fraction form
    3,930.96/5,422.32 = 2,358/x
  3. Step 3: Cross multiply
    3,930.96x = 5,422.32 × 2,358
  4. Step 4: Simplify right side
    3,930.96x = 12,785,830.56
  5. Step 5: Solve for x
    x = 12,785,830.56/3,930.96
  6. Step 6: Final answer
    x = 3,252.60

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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.