Home / 3,686.08-5,529.96-1,220.80

Finding the Fourth Proportional to 3,686.08, 5,529.96 and 1,220.80

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Solution

The fourth proportional to 3,686.08, 5,529.96 and 1,220.80 is: 1,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.08 : 5,529.96 = 1,220.80 : x
  2. Step 2: Convert to fraction form
    3,686.08/5,529.96 = 1,220.80/x
  3. Step 3: Cross multiply
    3,686.08x = 5,529.96 × 1,220.80
  4. Step 4: Simplify right side
    3,686.08x = 6,750,975.17
  5. Step 5: Solve for x
    x = 6,750,975.17/3,686.08
  6. Step 6: Final answer
    x = 1,831.48

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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.