Home / 3,685.50-5,529.16-1,220.57

Finding the Fourth Proportional to 3,685.50, 5,529.16 and 1,220.57

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Solution

The fourth proportional to 3,685.50, 5,529.16 and 1,220.57 is: 1,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.50 : 5,529.16 = 1,220.57 : x
  2. Step 2: Convert to fraction form
    3,685.50/5,529.16 = 1,220.57/x
  3. Step 3: Cross multiply
    3,685.50x = 5,529.16 × 1,220.57
  4. Step 4: Simplify right side
    3,685.50x = 6,748,721.44
  5. Step 5: Solve for x
    x = 6,748,721.44/3,685.50
  6. Step 6: Final answer
    x = 1,831.15

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Double scale
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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.