Home / 3,228.72-4,455.36-1,831.20

Finding the Fourth Proportional to 3,228.72, 4,455.36 and 1,831.20

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Solution

The fourth proportional to 3,228.72, 4,455.36 and 1,831.20 is: 2,526.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.72 : 4,455.36 = 1,831.20 : x
  2. Step 2: Convert to fraction form
    3,228.72/4,455.36 = 1,831.20/x
  3. Step 3: Cross multiply
    3,228.72x = 4,455.36 × 1,831.20
  4. Step 4: Simplify right side
    3,228.72x = 8,158,655.23
  5. Step 5: Solve for x
    x = 8,158,655.23/3,228.72
  6. Step 6: Final answer
    x = 2,526.90

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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.