Home / 3,180.64-4,389.50-1,764.40

Finding the Fourth Proportional to 3,180.64, 4,389.50 and 1,764.40

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Solution

The fourth proportional to 3,180.64, 4,389.50 and 1,764.40 is: 2,434.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.64 : 4,389.50 = 1,764.40 : x
  2. Step 2: Convert to fraction form
    3,180.64/4,389.50 = 1,764.40/x
  3. Step 3: Cross multiply
    3,180.64x = 4,389.50 × 1,764.40
  4. Step 4: Simplify right side
    3,180.64x = 7,744,833.80
  5. Step 5: Solve for x
    x = 7,744,833.80/3,180.64
  6. Step 6: Final answer
    x = 2,434.99

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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.