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Finding the Fourth Proportional to 3,470.76, 4,787.46 and 3,029.76

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Solution

The fourth proportional to 3,470.76, 4,787.46 and 3,029.76 is: 4,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.76 : 4,787.46 = 3,029.76 : x
  2. Step 2: Convert to fraction form
    3,470.76/4,787.46 = 3,029.76/x
  3. Step 3: Cross multiply
    3,470.76x = 4,787.46 × 3,029.76
  4. Step 4: Simplify right side
    3,470.76x = 14,504,854.81
  5. Step 5: Solve for x
    x = 14,504,854.81/3,470.76
  6. Step 6: Final answer
    x = 4,179.16

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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.