Home / 3,981.98-5,497.10-2,490.74

Finding the Fourth Proportional to 3,981.98, 5,497.10 and 2,490.74

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Solution

The fourth proportional to 3,981.98, 5,497.10 and 2,490.74 is: 3,438.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.98 : 5,497.10 = 2,490.74 : x
  2. Step 2: Convert to fraction form
    3,981.98/5,497.10 = 2,490.74/x
  3. Step 3: Cross multiply
    3,981.98x = 5,497.10 × 2,490.74
  4. Step 4: Simplify right side
    3,981.98x = 13,691,846.85
  5. Step 5: Solve for x
    x = 13,691,846.85/3,981.98
  6. Step 6: Final answer
    x = 3,438.45

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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.