Home / 3,031.99-4,183.71-1,687.49

Finding the Fourth Proportional to 3,031.99, 4,183.71 and 1,687.49

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Solution

The fourth proportional to 3,031.99, 4,183.71 and 1,687.49 is: 2,328.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.99 : 4,183.71 = 1,687.49 : x
  2. Step 2: Convert to fraction form
    3,031.99/4,183.71 = 1,687.49/x
  3. Step 3: Cross multiply
    3,031.99x = 4,183.71 × 1,687.49
  4. Step 4: Simplify right side
    3,031.99x = 7,059,968.79
  5. Step 5: Solve for x
    x = 7,059,968.79/3,031.99
  6. Step 6: Final answer
    x = 2,328.49

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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.