Home / 3,178.40-4,767.60-3,123.73

Finding the Fourth Proportional to 3,178.40, 4,767.60 and 3,123.73

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Solution

The fourth proportional to 3,178.40, 4,767.60 and 3,123.73 is: 4,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.40 : 4,767.60 = 3,123.73 : x
  2. Step 2: Convert to fraction form
    3,178.40/4,767.60 = 3,123.73/x
  3. Step 3: Cross multiply
    3,178.40x = 4,767.60 × 3,123.73
  4. Step 4: Simplify right side
    3,178.40x = 14,892,695.15
  5. Step 5: Solve for x
    x = 14,892,695.15/3,178.40
  6. Step 6: Final answer
    x = 4,685.60

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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.