Home / 4,778.28-7,167.96-1,490.49

Finding the Fourth Proportional to 4,778.28, 7,167.96 and 1,490.49

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Solution

The fourth proportional to 4,778.28, 7,167.96 and 1,490.49 is: 2,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.28 : 7,167.96 = 1,490.49 : x
  2. Step 2: Convert to fraction form
    4,778.28/7,167.96 = 1,490.49/x
  3. Step 3: Cross multiply
    4,778.28x = 7,167.96 × 1,490.49
  4. Step 4: Simplify right side
    4,778.28x = 10,683,772.70
  5. Step 5: Solve for x
    x = 10,683,772.70/4,778.28
  6. Step 6: Final answer
    x = 2,235.90

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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.