Home / 3,929.63-5,422.91-2,358.05

Finding the Fourth Proportional to 3,929.63, 5,422.91 and 2,358.05

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Solution

The fourth proportional to 3,929.63, 5,422.91 and 2,358.05 is: 3,254.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.63 : 5,422.91 = 2,358.05 : x
  2. Step 2: Convert to fraction form
    3,929.63/5,422.91 = 2,358.05/x
  3. Step 3: Cross multiply
    3,929.63x = 5,422.91 × 2,358.05
  4. Step 4: Simplify right side
    3,929.63x = 12,787,454.02
  5. Step 5: Solve for x
    x = 12,787,454.02/3,929.63
  6. Step 6: Final answer
    x = 3,254.12

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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.