Home / 3,638.08-5,020.64-2,066.40

Finding the Fourth Proportional to 3,638.08, 5,020.64 and 2,066.40

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Solution

The fourth proportional to 3,638.08, 5,020.64 and 2,066.40 is: 2,851.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.08 : 5,020.64 = 2,066.40 : x
  2. Step 2: Convert to fraction form
    3,638.08/5,020.64 = 2,066.40/x
  3. Step 3: Cross multiply
    3,638.08x = 5,020.64 × 2,066.40
  4. Step 4: Simplify right side
    3,638.08x = 10,374,650.50
  5. Step 5: Solve for x
    x = 10,374,650.50/3,638.08
  6. Step 6: Final answer
    x = 2,851.68

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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.