Home / 3,687.40-5,088.42-2,290.12

Finding the Fourth Proportional to 3,687.40, 5,088.42 and 2,290.12

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Solution

The fourth proportional to 3,687.40, 5,088.42 and 2,290.12 is: 3,160.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.40 : 5,088.42 = 2,290.12 : x
  2. Step 2: Convert to fraction form
    3,687.40/5,088.42 = 2,290.12/x
  3. Step 3: Cross multiply
    3,687.40x = 5,088.42 × 2,290.12
  4. Step 4: Simplify right side
    3,687.40x = 11,653,092.41
  5. Step 5: Solve for x
    x = 11,653,092.41/3,687.40
  6. Step 6: Final answer
    x = 3,160.25

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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.