Home / 5,581.55-7,694.66-3,987.77

Finding the Fourth Proportional to 5,581.55, 7,694.66 and 3,987.77

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Solution

The fourth proportional to 5,581.55, 7,694.66 and 3,987.77 is: 5,497.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.55 : 7,694.66 = 3,987.77 : x
  2. Step 2: Convert to fraction form
    5,581.55/7,694.66 = 3,987.77/x
  3. Step 3: Cross multiply
    5,581.55x = 7,694.66 × 3,987.77
  4. Step 4: Simplify right side
    5,581.55x = 30,684,534.31
  5. Step 5: Solve for x
    x = 30,684,534.31/5,581.55
  6. Step 6: Final answer
    x = 5,497.49

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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.