Home / 5,521.78-8,285.64-4,291.66

Finding the Fourth Proportional to 5,521.78, 8,285.64 and 4,291.66

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Solution

The fourth proportional to 5,521.78, 8,285.64 and 4,291.66 is: 6,439.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.78 : 8,285.64 = 4,291.66 : x
  2. Step 2: Convert to fraction form
    5,521.78/8,285.64 = 4,291.66/x
  3. Step 3: Cross multiply
    5,521.78x = 8,285.64 × 4,291.66
  4. Step 4: Simplify right side
    5,521.78x = 35,559,149.76
  5. Step 5: Solve for x
    x = 35,559,149.76/5,521.78
  6. Step 6: Final answer
    x = 6,439.80

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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.