Home / 2,490.20-3,436.50-1,371.17

Finding the Fourth Proportional to 2,490.20, 3,436.50 and 1,371.17

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Solution

The fourth proportional to 2,490.20, 3,436.50 and 1,371.17 is: 1,892.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.20 : 3,436.50 = 1,371.17 : x
  2. Step 2: Convert to fraction form
    2,490.20/3,436.50 = 1,371.17/x
  3. Step 3: Cross multiply
    2,490.20x = 3,436.50 × 1,371.17
  4. Step 4: Simplify right side
    2,490.20x = 4,712,025.92
  5. Step 5: Solve for x
    x = 4,712,025.92/2,490.20
  6. Step 6: Final answer
    x = 1,892.23

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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.