Home / 3,720.48-5,581.68-3,205.20

Finding the Fourth Proportional to 3,720.48, 5,581.68 and 3,205.20

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Solution

The fourth proportional to 3,720.48, 5,581.68 and 3,205.20 is: 4,808.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.48 : 5,581.68 = 3,205.20 : x
  2. Step 2: Convert to fraction form
    3,720.48/5,581.68 = 3,205.20/x
  3. Step 3: Cross multiply
    3,720.48x = 5,581.68 × 3,205.20
  4. Step 4: Simplify right side
    3,720.48x = 17,890,400.74
  5. Step 5: Solve for x
    x = 17,890,400.74/3,720.48
  6. Step 6: Final answer
    x = 4,808.63

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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.