Home / 7,890.54-11,831.68-2,343.12

Finding the Fourth Proportional to 7,890.54, 11,831.68 and 2,343.12

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Solution

The fourth proportional to 7,890.54, 11,831.68 and 2,343.12 is: 3,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.54 : 11,831.68 = 2,343.12 : x
  2. Step 2: Convert to fraction form
    7,890.54/11,831.68 = 2,343.12/x
  3. Step 3: Cross multiply
    7,890.54x = 11,831.68 × 2,343.12
  4. Step 4: Simplify right side
    7,890.54x = 27,723,046.04
  5. Step 5: Solve for x
    x = 27,723,046.04/7,890.54
  6. Step 6: Final answer
    x = 3,513.45

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1.5x scale

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.