Home / 2,490.90-3,437.46-1,371.91

Finding the Fourth Proportional to 2,490.90, 3,437.46 and 1,371.91

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Solution

The fourth proportional to 2,490.90, 3,437.46 and 1,371.91 is: 1,893.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.90 : 3,437.46 = 1,371.91 : x
  2. Step 2: Convert to fraction form
    2,490.90/3,437.46 = 1,371.91/x
  3. Step 3: Cross multiply
    2,490.90x = 3,437.46 × 1,371.91
  4. Step 4: Simplify right side
    2,490.90x = 4,715,897.13
  5. Step 5: Solve for x
    x = 4,715,897.13/2,490.90
  6. Step 6: Final answer
    x = 1,893.25

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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.