Home / 2,637.25-3,639.30-1,442.21

Finding the Fourth Proportional to 2,637.25, 3,639.30 and 1,442.21

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Solution

The fourth proportional to 2,637.25, 3,639.30 and 1,442.21 is: 1,990.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,637.25 : 3,639.30 = 1,442.21 : x
  2. Step 2: Convert to fraction form
    2,637.25/3,639.30 = 1,442.21/x
  3. Step 3: Cross multiply
    2,637.25x = 3,639.30 × 1,442.21
  4. Step 4: Simplify right side
    2,637.25x = 5,248,634.85
  5. Step 5: Solve for x
    x = 5,248,634.85/2,637.25
  6. Step 6: Final answer
    x = 1,990.19

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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.