Home / 6,429.78-8,865.36-5,369.04

Finding the Fourth Proportional to 6,429.78, 8,865.36 and 5,369.04

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Solution

The fourth proportional to 6,429.78, 8,865.36 and 5,369.04 is: 7,402.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.78 : 8,865.36 = 5,369.04 : x
  2. Step 2: Convert to fraction form
    6,429.78/8,865.36 = 5,369.04/x
  3. Step 3: Cross multiply
    6,429.78x = 8,865.36 × 5,369.04
  4. Step 4: Simplify right side
    6,429.78x = 47,598,472.45
  5. Step 5: Solve for x
    x = 47,598,472.45/6,429.78
  6. Step 6: Final answer
    x = 7,402.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.