Home / 3,638.40-5,020.40-2,066.20

Finding the Fourth Proportional to 3,638.40, 5,020.40 and 2,066.20

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Solution

The fourth proportional to 3,638.40, 5,020.40 and 2,066.20 is: 2,851.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.40 : 5,020.40 = 2,066.20 : x
  2. Step 2: Convert to fraction form
    3,638.40/5,020.40 = 2,066.20/x
  3. Step 3: Cross multiply
    3,638.40x = 5,020.40 × 2,066.20
  4. Step 4: Simplify right side
    3,638.40x = 10,373,150.48
  5. Step 5: Solve for x
    x = 10,373,150.48/3,638.40
  6. Step 6: Final answer
    x = 2,851.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.