Home / 5,316.80-7,974.92-1,618.94

Finding the Fourth Proportional to 5,316.80, 7,974.92 and 1,618.94

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Solution

The fourth proportional to 5,316.80, 7,974.92 and 1,618.94 is: 2,428.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.80 : 7,974.92 = 1,618.94 : x
  2. Step 2: Convert to fraction form
    5,316.80/7,974.92 = 1,618.94/x
  3. Step 3: Cross multiply
    5,316.80x = 7,974.92 × 1,618.94
  4. Step 4: Simplify right side
    5,316.80x = 12,910,916.98
  5. Step 5: Solve for x
    x = 12,910,916.98/5,316.80
  6. Step 6: Final answer
    x = 2,428.32

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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.