Home / 3,585.75-5,380.76-1,638.11

Finding the Fourth Proportional to 3,585.75, 5,380.76 and 1,638.11

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Solution

The fourth proportional to 3,585.75, 5,380.76 and 1,638.11 is: 2,458.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,585.75 : 5,380.76 = 1,638.11 : x
  2. Step 2: Convert to fraction form
    3,585.75/5,380.76 = 1,638.11/x
  3. Step 3: Cross multiply
    3,585.75x = 5,380.76 × 1,638.11
  4. Step 4: Simplify right side
    3,585.75x = 8,814,241.67
  5. Step 5: Solve for x
    x = 8,814,241.67/3,585.75
  6. Step 6: Final answer
    x = 2,458.13

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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.