Home / 3,212.60-4,787.13-2,885.55

Finding the Fourth Proportional to 3,212.60, 4,787.13 and 2,885.55

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Solution

The fourth proportional to 3,212.60, 4,787.13 and 2,885.55 is: 4,299.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.60 : 4,787.13 = 2,885.55 : x
  2. Step 2: Convert to fraction form
    3,212.60/4,787.13 = 2,885.55/x
  3. Step 3: Cross multiply
    3,212.60x = 4,787.13 × 2,885.55
  4. Step 4: Simplify right side
    3,212.60x = 13,813,502.97
  5. Step 5: Solve for x
    x = 13,813,502.97/3,212.60
  6. Step 6: Final answer
    x = 4,299.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.