Home / 3,180.55-4,389.42-1,764.68

Finding the Fourth Proportional to 3,180.55, 4,389.42 and 1,764.68

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Solution

The fourth proportional to 3,180.55, 4,389.42 and 1,764.68 is: 2,435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.55 : 4,389.42 = 1,764.68 : x
  2. Step 2: Convert to fraction form
    3,180.55/4,389.42 = 1,764.68/x
  3. Step 3: Cross multiply
    3,180.55x = 4,389.42 × 1,764.68
  4. Step 4: Simplify right side
    3,180.55x = 7,745,921.69
  5. Step 5: Solve for x
    x = 7,745,921.69/3,180.55
  6. Step 6: Final answer
    x = 2,435.40

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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.