Home / 3,981.96-5,497.84-2,490.60

Finding the Fourth Proportional to 3,981.96, 5,497.84 and 2,490.60

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Solution

The fourth proportional to 3,981.96, 5,497.84 and 2,490.60 is: 3,438.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.96 : 5,497.84 = 2,490.60 : x
  2. Step 2: Convert to fraction form
    3,981.96/5,497.84 = 2,490.60/x
  3. Step 3: Cross multiply
    3,981.96x = 5,497.84 × 2,490.60
  4. Step 4: Simplify right side
    3,981.96x = 13,692,920.30
  5. Step 5: Solve for x
    x = 13,692,920.30/3,981.96
  6. Step 6: Final answer
    x = 3,438.74

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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.