Home / 3,031.86-4,183.90-1,687.46

Finding the Fourth Proportional to 3,031.86, 4,183.90 and 1,687.46

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Solution

The fourth proportional to 3,031.86, 4,183.90 and 1,687.46 is: 2,328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.86 : 4,183.90 = 1,687.46 : x
  2. Step 2: Convert to fraction form
    3,031.86/4,183.90 = 1,687.46/x
  3. Step 3: Cross multiply
    3,031.86x = 4,183.90 × 1,687.46
  4. Step 4: Simplify right side
    3,031.86x = 7,060,163.89
  5. Step 5: Solve for x
    x = 7,060,163.89/3,031.86
  6. Step 6: Final answer
    x = 2,328.66

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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.