Home / 3,470.20-4,787.40-2,142.88

Finding the Fourth Proportional to 3,470.20, 4,787.40 and 2,142.88

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Solution

The fourth proportional to 3,470.20, 4,787.40 and 2,142.88 is: 2,956.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.20 : 4,787.40 = 2,142.88 : x
  2. Step 2: Convert to fraction form
    3,470.20/4,787.40 = 2,142.88/x
  3. Step 3: Cross multiply
    3,470.20x = 4,787.40 × 2,142.88
  4. Step 4: Simplify right side
    3,470.20x = 10,258,823.71
  5. Step 5: Solve for x
    x = 10,258,823.71/3,470.20
  6. Step 6: Final answer
    x = 2,956.26

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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.