Home / 5,428.35-8,140.91-2,829.87

Finding the Fourth Proportional to 5,428.35, 8,140.91 and 2,829.87

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Solution

The fourth proportional to 5,428.35, 8,140.91 and 2,829.87 is: 4,243.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.35 : 8,140.91 = 2,829.87 : x
  2. Step 2: Convert to fraction form
    5,428.35/8,140.91 = 2,829.87/x
  3. Step 3: Cross multiply
    5,428.35x = 8,140.91 × 2,829.87
  4. Step 4: Simplify right side
    5,428.35x = 23,037,702.83
  5. Step 5: Solve for x
    x = 23,037,702.83/5,428.35
  6. Step 6: Final answer
    x = 4,243.96

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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.