Home / 2,292.05-3,438.59-831.21

Finding the Fourth Proportional to 2,292.05, 3,438.59 and 831.21

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Solution

The fourth proportional to 2,292.05, 3,438.59 and 831.21 is: 1,247.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.05 : 3,438.59 = 831.21 : x
  2. Step 2: Convert to fraction form
    2,292.05/3,438.59 = 831.21/x
  3. Step 3: Cross multiply
    2,292.05x = 3,438.59 × 831.21
  4. Step 4: Simplify right side
    2,292.05x = 2,858,186.24
  5. Step 5: Solve for x
    x = 2,858,186.24/2,292.05
  6. Step 6: Final answer
    x = 1,247.00

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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.