Home / 5,178.28-7,760.47-2,834.76

Finding the Fourth Proportional to 5,178.28, 7,760.47 and 2,834.76

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Solution

The fourth proportional to 5,178.28, 7,760.47 and 2,834.76 is: 4,248.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.28 : 7,760.47 = 2,834.76 : x
  2. Step 2: Convert to fraction form
    5,178.28/7,760.47 = 2,834.76/x
  3. Step 3: Cross multiply
    5,178.28x = 7,760.47 × 2,834.76
  4. Step 4: Simplify right side
    5,178.28x = 21,999,069.94
  5. Step 5: Solve for x
    x = 21,999,069.94/5,178.28
  6. Step 6: Final answer
    x = 4,248.34

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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.