Home / 5,178.28-7,772.38-4,031.40

Finding the Fourth Proportional to 5,178.28, 7,772.38 and 4,031.40

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Solution

The fourth proportional to 5,178.28, 7,772.38 and 4,031.40 is: 6,050.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.28 : 7,772.38 = 4,031.40 : x
  2. Step 2: Convert to fraction form
    5,178.28/7,772.38 = 4,031.40/x
  3. Step 3: Cross multiply
    5,178.28x = 7,772.38 × 4,031.40
  4. Step 4: Simplify right side
    5,178.28x = 31,333,572.73
  5. Step 5: Solve for x
    x = 31,333,572.73/5,178.28
  6. Step 6: Final answer
    x = 6,050.96

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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.