Home / 7,890.62-11,831.73-2,343.20

Finding the Fourth Proportional to 7,890.62, 11,831.73 and 2,343.20

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Solution

The fourth proportional to 7,890.62, 11,831.73 and 2,343.20 is: 3,513.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.62 : 11,831.73 = 2,343.20 : x
  2. Step 2: Convert to fraction form
    7,890.62/11,831.73 = 2,343.20/x
  3. Step 3: Cross multiply
    7,890.62x = 11,831.73 × 2,343.20
  4. Step 4: Simplify right side
    7,890.62x = 27,724,109.74
  5. Step 5: Solve for x
    x = 27,724,109.74/7,890.62
  6. Step 6: Final answer
    x = 3,513.55

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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.