Home / 2,831.04-3,906.90-1,651.68

Finding the Fourth Proportional to 2,831.04, 3,906.90 and 1,651.68

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Solution

The fourth proportional to 2,831.04, 3,906.90 and 1,651.68 is: 2,279.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.04 : 3,906.90 = 1,651.68 : x
  2. Step 2: Convert to fraction form
    2,831.04/3,906.90 = 1,651.68/x
  3. Step 3: Cross multiply
    2,831.04x = 3,906.90 × 1,651.68
  4. Step 4: Simplify right side
    2,831.04x = 6,452,948.59
  5. Step 5: Solve for x
    x = 6,452,948.59/2,831.04
  6. Step 6: Final answer
    x = 2,279.36

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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.