Home / 3,191.40-4,787.58-1,630.56

Finding the Fourth Proportional to 3,191.40, 4,787.58 and 1,630.56

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Solution

The fourth proportional to 3,191.40, 4,787.58 and 1,630.56 is: 2,446.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.40 : 4,787.58 = 1,630.56 : x
  2. Step 2: Convert to fraction form
    3,191.40/4,787.58 = 1,630.56/x
  3. Step 3: Cross multiply
    3,191.40x = 4,787.58 × 1,630.56
  4. Step 4: Simplify right side
    3,191.40x = 7,806,436.44
  5. Step 5: Solve for x
    x = 7,806,436.44/3,191.40
  6. Step 6: Final answer
    x = 2,446.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.