Home / 3,131.15-4,321.07-1,714.85

Finding the Fourth Proportional to 3,131.15, 4,321.07 and 1,714.85

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Solution

The fourth proportional to 3,131.15, 4,321.07 and 1,714.85 is: 2,366.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.15 : 4,321.07 = 1,714.85 : x
  2. Step 2: Convert to fraction form
    3,131.15/4,321.07 = 1,714.85/x
  3. Step 3: Cross multiply
    3,131.15x = 4,321.07 × 1,714.85
  4. Step 4: Simplify right side
    3,131.15x = 7,409,956.71
  5. Step 5: Solve for x
    x = 7,409,956.71/3,131.15
  6. Step 6: Final answer
    x = 2,366.53

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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.