Home / 5,139.72-7,705.12-2,503.56

Finding the Fourth Proportional to 5,139.72, 7,705.12 and 2,503.56

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Solution

The fourth proportional to 5,139.72, 7,705.12 and 2,503.56 is: 3,753.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.72 : 7,705.12 = 2,503.56 : x
  2. Step 2: Convert to fraction form
    5,139.72/7,705.12 = 2,503.56/x
  3. Step 3: Cross multiply
    5,139.72x = 7,705.12 × 2,503.56
  4. Step 4: Simplify right side
    5,139.72x = 19,290,230.23
  5. Step 5: Solve for x
    x = 19,290,230.23/5,139.72
  6. Step 6: Final answer
    x = 3,753.17

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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.