Home / 2,490.45-3,436.55-1,371.32

Finding the Fourth Proportional to 2,490.45, 3,436.55 and 1,371.32

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Solution

The fourth proportional to 2,490.45, 3,436.55 and 1,371.32 is: 1,892.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.45 : 3,436.55 = 1,371.32 : x
  2. Step 2: Convert to fraction form
    2,490.45/3,436.55 = 1,371.32/x
  3. Step 3: Cross multiply
    2,490.45x = 3,436.55 × 1,371.32
  4. Step 4: Simplify right side
    2,490.45x = 4,712,602.76
  5. Step 5: Solve for x
    x = 4,712,602.76/2,490.45
  6. Step 6: Final answer
    x = 1,892.27

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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.