Home / 3,720.30-5,578.55-1,966.25

Finding the Fourth Proportional to 3,720.30, 5,578.55 and 1,966.25

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Solution

The fourth proportional to 3,720.30, 5,578.55 and 1,966.25 is: 2,948.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.30 : 5,578.55 = 1,966.25 : x
  2. Step 2: Convert to fraction form
    3,720.30/5,578.55 = 1,966.25/x
  3. Step 3: Cross multiply
    3,720.30x = 5,578.55 × 1,966.25
  4. Step 4: Simplify right side
    3,720.30x = 10,968,786.21
  5. Step 5: Solve for x
    x = 10,968,786.21/3,720.30
  6. Step 6: Final answer
    x = 2,948.36

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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.