Home / 3,685.72-5,528.04-1,220.62

Finding the Fourth Proportional to 3,685.72, 5,528.04 and 1,220.62

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Solution

The fourth proportional to 3,685.72, 5,528.04 and 1,220.62 is: 1,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.72 : 5,528.04 = 1,220.62 : x
  2. Step 2: Convert to fraction form
    3,685.72/5,528.04 = 1,220.62/x
  3. Step 3: Cross multiply
    3,685.72x = 5,528.04 × 1,220.62
  4. Step 4: Simplify right side
    3,685.72x = 6,747,636.18
  5. Step 5: Solve for x
    x = 6,747,636.18/3,685.72
  6. Step 6: Final answer
    x = 1,830.75

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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.