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Finding the Fourth Proportional to 3,470.75, 4,789.88 and 2,289.77

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Solution

The fourth proportional to 3,470.75, 4,789.88 and 2,289.77 is: 3,160.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.75 : 4,789.88 = 2,289.77 : x
  2. Step 2: Convert to fraction form
    3,470.75/4,789.88 = 2,289.77/x
  3. Step 3: Cross multiply
    3,470.75x = 4,789.88 × 2,289.77
  4. Step 4: Simplify right side
    3,470.75x = 10,967,688.13
  5. Step 5: Solve for x
    x = 10,967,688.13/3,470.75
  6. Step 6: Final answer
    x = 3,160.04

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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.