Home / 3,945.74-5,445.39-2,289.74

Finding the Fourth Proportional to 3,945.74, 5,445.39 and 2,289.74

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Solution

The fourth proportional to 3,945.74, 5,445.39 and 2,289.74 is: 3,160.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.74 : 5,445.39 = 2,289.74 : x
  2. Step 2: Convert to fraction form
    3,945.74/5,445.39 = 2,289.74/x
  3. Step 3: Cross multiply
    3,945.74x = 5,445.39 × 2,289.74
  4. Step 4: Simplify right side
    3,945.74x = 12,468,527.30
  5. Step 5: Solve for x
    x = 12,468,527.30/3,945.74
  6. Step 6: Final answer
    x = 3,160.00

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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.