Home / 3,561.42-5,342.58-1,220.79

Finding the Fourth Proportional to 3,561.42, 5,342.58 and 1,220.79

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Solution

The fourth proportional to 3,561.42, 5,342.58 and 1,220.79 is: 1,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.42 : 5,342.58 = 1,220.79 : x
  2. Step 2: Convert to fraction form
    3,561.42/5,342.58 = 1,220.79/x
  3. Step 3: Cross multiply
    3,561.42x = 5,342.58 × 1,220.79
  4. Step 4: Simplify right side
    3,561.42x = 6,522,168.24
  5. Step 5: Solve for x
    x = 6,522,168.24/3,561.42
  6. Step 6: Final answer
    x = 1,831.34

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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.