Home / 3,717.40-5,578.62-1,987.24

Finding the Fourth Proportional to 3,717.40, 5,578.62 and 1,987.24

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Solution

The fourth proportional to 3,717.40, 5,578.62 and 1,987.24 is: 2,982.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.40 : 5,578.62 = 1,987.24 : x
  2. Step 2: Convert to fraction form
    3,717.40/5,578.62 = 1,987.24/x
  3. Step 3: Cross multiply
    3,717.40x = 5,578.62 × 1,987.24
  4. Step 4: Simplify right side
    3,717.40x = 11,086,056.81
  5. Step 5: Solve for x
    x = 11,086,056.81/3,717.40
  6. Step 6: Final answer
    x = 2,982.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.