Home / 5,428.98-8,139.47-3,669.62

Finding the Fourth Proportional to 5,428.98, 8,139.47 and 3,669.62

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Solution

The fourth proportional to 5,428.98, 8,139.47 and 3,669.62 is: 5,501.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.98 : 8,139.47 = 3,669.62 : x
  2. Step 2: Convert to fraction form
    5,428.98/8,139.47 = 3,669.62/x
  3. Step 3: Cross multiply
    5,428.98x = 8,139.47 × 3,669.62
  4. Step 4: Simplify right side
    5,428.98x = 29,868,702.86
  5. Step 5: Solve for x
    x = 29,868,702.86/5,428.98
  6. Step 6: Final answer
    x = 5,501.72

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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.