Home / 3,581.15-4,941.91-1,987.71

Finding the Fourth Proportional to 3,581.15, 4,941.91 and 1,987.71

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Solution

The fourth proportional to 3,581.15, 4,941.91 and 1,987.71 is: 2,742.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.15 : 4,941.91 = 1,987.71 : x
  2. Step 2: Convert to fraction form
    3,581.15/4,941.91 = 1,987.71/x
  3. Step 3: Cross multiply
    3,581.15x = 4,941.91 × 1,987.71
  4. Step 4: Simplify right side
    3,581.15x = 9,823,074.69
  5. Step 5: Solve for x
    x = 9,823,074.69/3,581.15
  6. Step 6: Final answer
    x = 2,742.99

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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.