Home / 7,720.82-11,565.73-3,555.04

Finding the Fourth Proportional to 7,720.82, 11,565.73 and 3,555.04

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Solution

The fourth proportional to 7,720.82, 11,565.73 and 3,555.04 is: 5,325.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.82 : 11,565.73 = 3,555.04 : x
  2. Step 2: Convert to fraction form
    7,720.82/11,565.73 = 3,555.04/x
  3. Step 3: Cross multiply
    7,720.82x = 11,565.73 × 3,555.04
  4. Step 4: Simplify right side
    7,720.82x = 41,116,632.78
  5. Step 5: Solve for x
    x = 41,116,632.78/7,720.82
  6. Step 6: Final answer
    x = 5,325.42

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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.