Home / 5,142.81-7,713.75-2,509.29

Finding the Fourth Proportional to 5,142.81, 7,713.75 and 2,509.29

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Solution

The fourth proportional to 5,142.81, 7,713.75 and 2,509.29 is: 3,763.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.81 : 7,713.75 = 2,509.29 : x
  2. Step 2: Convert to fraction form
    5,142.81/7,713.75 = 2,509.29/x
  3. Step 3: Cross multiply
    5,142.81x = 7,713.75 × 2,509.29
  4. Step 4: Simplify right side
    5,142.81x = 19,356,035.74
  5. Step 5: Solve for x
    x = 19,356,035.74/5,142.81
  6. Step 6: Final answer
    x = 3,763.71

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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.