Home / 3,913.16-5,398.97-2,420.55

Finding the Fourth Proportional to 3,913.16, 5,398.97 and 2,420.55

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Solution

The fourth proportional to 3,913.16, 5,398.97 and 2,420.55 is: 3,339.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.16 : 5,398.97 = 2,420.55 : x
  2. Step 2: Convert to fraction form
    3,913.16/5,398.97 = 2,420.55/x
  3. Step 3: Cross multiply
    3,913.16x = 5,398.97 × 2,420.55
  4. Step 4: Simplify right side
    3,913.16x = 13,068,464.73
  5. Step 5: Solve for x
    x = 13,068,464.73/3,913.16
  6. Step 6: Final answer
    x = 3,339.62

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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.