Home / 2,292.72-3,439.08-831.87

Finding the Fourth Proportional to 2,292.72, 3,439.08 and 831.87

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Solution

The fourth proportional to 2,292.72, 3,439.08 and 831.87 is: 1,247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.72 : 3,439.08 = 831.87 : x
  2. Step 2: Convert to fraction form
    2,292.72/3,439.08 = 831.87/x
  3. Step 3: Cross multiply
    2,292.72x = 3,439.08 × 831.87
  4. Step 4: Simplify right side
    2,292.72x = 2,860,867.48
  5. Step 5: Solve for x
    x = 2,860,867.48/2,292.72
  6. Step 6: Final answer
    x = 1,247.81

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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.