Home / 3,981.19-5,494.09-2,490

Finding the Fourth Proportional to 3,981.19, 5,494.09 and 2,490

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Solution

The fourth proportional to 3,981.19, 5,494.09 and 2,490 is: 3,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.19 : 5,494.09 = 2,490 : x
  2. Step 2: Convert to fraction form
    3,981.19/5,494.09 = 2,490/x
  3. Step 3: Cross multiply
    3,981.19x = 5,494.09 × 2,490
  4. Step 4: Simplify right side
    3,981.19x = 13,680,284.10
  5. Step 5: Solve for x
    x = 13,680,284.10/3,981.19
  6. Step 6: Final answer
    x = 3,436.23

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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.