Home / 3,123.15-4,309.86-1,797.58

Finding the Fourth Proportional to 3,123.15, 4,309.86 and 1,797.58

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Solution

The fourth proportional to 3,123.15, 4,309.86 and 1,797.58 is: 2,480.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.15 : 4,309.86 = 1,797.58 : x
  2. Step 2: Convert to fraction form
    3,123.15/4,309.86 = 1,797.58/x
  3. Step 3: Cross multiply
    3,123.15x = 4,309.86 × 1,797.58
  4. Step 4: Simplify right side
    3,123.15x = 7,747,330.27
  5. Step 5: Solve for x
    x = 7,747,330.27/3,123.15
  6. Step 6: Final answer
    x = 2,480.62

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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.