Home / 3,685.77-5,529.38-1,220.74

Finding the Fourth Proportional to 3,685.77, 5,529.38 and 1,220.74

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Solution

The fourth proportional to 3,685.77, 5,529.38 and 1,220.74 is: 1,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.77 : 5,529.38 = 1,220.74 : x
  2. Step 2: Convert to fraction form
    3,685.77/5,529.38 = 1,220.74/x
  3. Step 3: Cross multiply
    3,685.77x = 5,529.38 × 1,220.74
  4. Step 4: Simplify right side
    3,685.77x = 6,749,915.41
  5. Step 5: Solve for x
    x = 6,749,915.41/3,685.77
  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.