Home / 4,787.40-6,604.20-3,106.80

Finding the Fourth Proportional to 4,787.40, 6,604.20 and 3,106.80

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Solution

The fourth proportional to 4,787.40, 6,604.20 and 3,106.80 is: 4,285.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.40 : 6,604.20 = 3,106.80 : x
  2. Step 2: Convert to fraction form
    4,787.40/6,604.20 = 3,106.80/x
  3. Step 3: Cross multiply
    4,787.40x = 6,604.20 × 3,106.80
  4. Step 4: Simplify right side
    4,787.40x = 20,517,928.56
  5. Step 5: Solve for x
    x = 20,517,928.56/4,787.40
  6. Step 6: Final answer
    x = 4,285.82

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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.