Home / 2,987.42-4,481.73-1,138.19

Finding the Fourth Proportional to 2,987.42, 4,481.73 and 1,138.19

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Solution

The fourth proportional to 2,987.42, 4,481.73 and 1,138.19 is: 1,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.42 : 4,481.73 = 1,138.19 : x
  2. Step 2: Convert to fraction form
    2,987.42/4,481.73 = 1,138.19/x
  3. Step 3: Cross multiply
    2,987.42x = 4,481.73 × 1,138.19
  4. Step 4: Simplify right side
    2,987.42x = 5,101,037.86
  5. Step 5: Solve for x
    x = 5,101,037.86/2,987.42
  6. Step 6: Final answer
    x = 1,707.51

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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.