Home / 2,490.21-3,436.43-1,371.14

Finding the Fourth Proportional to 2,490.21, 3,436.43 and 1,371.14

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Solution

The fourth proportional to 2,490.21, 3,436.43 and 1,371.14 is: 1,892.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.21 : 3,436.43 = 1,371.14 : x
  2. Step 2: Convert to fraction form
    2,490.21/3,436.43 = 1,371.14/x
  3. Step 3: Cross multiply
    2,490.21x = 3,436.43 × 1,371.14
  4. Step 4: Simplify right side
    2,490.21x = 4,711,802.59
  5. Step 5: Solve for x
    x = 4,711,802.59/2,490.21
  6. Step 6: Final answer
    x = 1,892.13

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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.