Home / 3,743.80-5,615.70-3,686.20

Finding the Fourth Proportional to 3,743.80, 5,615.70 and 3,686.20

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Solution

The fourth proportional to 3,743.80, 5,615.70 and 3,686.20 is: 5,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,743.80 : 5,615.70 = 3,686.20 : x
  2. Step 2: Convert to fraction form
    3,743.80/5,615.70 = 3,686.20/x
  3. Step 3: Cross multiply
    3,743.80x = 5,615.70 × 3,686.20
  4. Step 4: Simplify right side
    3,743.80x = 20,700,593.34
  5. Step 5: Solve for x
    x = 20,700,593.34/3,743.80
  6. Step 6: Final answer
    x = 5,529.30

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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.