Home / 2,143.32-2,961.05-1,831.80

Finding the Fourth Proportional to 2,143.32, 2,961.05 and 1,831.80

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Solution

The fourth proportional to 2,143.32, 2,961.05 and 1,831.80 is: 2,530.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.32 : 2,961.05 = 1,831.80 : x
  2. Step 2: Convert to fraction form
    2,143.32/2,961.05 = 1,831.80/x
  3. Step 3: Cross multiply
    2,143.32x = 2,961.05 × 1,831.80
  4. Step 4: Simplify right side
    2,143.32x = 5,424,051.39
  5. Step 5: Solve for x
    x = 5,424,051.39/2,143.32
  6. Step 6: Final answer
    x = 2,530.68

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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.