Home / 5,217.80-7,821.95-1,930.05

Finding the Fourth Proportional to 5,217.80, 7,821.95 and 1,930.05

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Solution

The fourth proportional to 5,217.80, 7,821.95 and 1,930.05 is: 2,893.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.80 : 7,821.95 = 1,930.05 : x
  2. Step 2: Convert to fraction form
    5,217.80/7,821.95 = 1,930.05/x
  3. Step 3: Cross multiply
    5,217.80x = 7,821.95 × 1,930.05
  4. Step 4: Simplify right side
    5,217.80x = 15,096,744.95
  5. Step 5: Solve for x
    x = 15,096,744.95/5,217.80
  6. Step 6: Final answer
    x = 2,893.32

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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.