Home / 2,831.64-4,247.40-1,100.28

Finding the Fourth Proportional to 2,831.64, 4,247.40 and 1,100.28

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Solution

The fourth proportional to 2,831.64, 4,247.40 and 1,100.28 is: 1,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.64 : 4,247.40 = 1,100.28 : x
  2. Step 2: Convert to fraction form
    2,831.64/4,247.40 = 1,100.28/x
  3. Step 3: Cross multiply
    2,831.64x = 4,247.40 × 1,100.28
  4. Step 4: Simplify right side
    2,831.64x = 4,673,329.27
  5. Step 5: Solve for x
    x = 4,673,329.27/2,831.64
  6. Step 6: Final answer
    x = 1,650.40

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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.