Home / 2,775.76-3,831.24-1,729.04

Finding the Fourth Proportional to 2,775.76, 3,831.24 and 1,729.04

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Solution

The fourth proportional to 2,775.76, 3,831.24 and 1,729.04 is: 2,386.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.76 : 3,831.24 = 1,729.04 : x
  2. Step 2: Convert to fraction form
    2,775.76/3,831.24 = 1,729.04/x
  3. Step 3: Cross multiply
    2,775.76x = 3,831.24 × 1,729.04
  4. Step 4: Simplify right side
    2,775.76x = 6,624,367.21
  5. Step 5: Solve for x
    x = 6,624,367.21/2,775.76
  6. Step 6: Final answer
    x = 2,386.51

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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.