Home / 3,090.20-4,264.30-1,831.38

Finding the Fourth Proportional to 3,090.20, 4,264.30 and 1,831.38

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Solution

The fourth proportional to 3,090.20, 4,264.30 and 1,831.38 is: 2,527.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.20 : 4,264.30 = 1,831.38 : x
  2. Step 2: Convert to fraction form
    3,090.20/4,264.30 = 1,831.38/x
  3. Step 3: Cross multiply
    3,090.20x = 4,264.30 × 1,831.38
  4. Step 4: Simplify right side
    3,090.20x = 7,809,529.73
  5. Step 5: Solve for x
    x = 7,809,529.73/3,090.20
  6. Step 6: Final answer
    x = 2,527.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.