Home / 3,686.45-5,529.26-1,221.41

Finding the Fourth Proportional to 3,686.45, 5,529.26 and 1,221.41

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Solution

The fourth proportional to 3,686.45, 5,529.26 and 1,221.41 is: 1,831.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.45 : 5,529.26 = 1,221.41 : x
  2. Step 2: Convert to fraction form
    3,686.45/5,529.26 = 1,221.41/x
  3. Step 3: Cross multiply
    3,686.45x = 5,529.26 × 1,221.41
  4. Step 4: Simplify right side
    3,686.45x = 6,753,510.33
  5. Step 5: Solve for x
    x = 6,753,510.33/3,686.45
  6. Step 6: Final answer
    x = 1,831.98

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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.