Home / 3,651.20-5,487.60-3,586.40

Finding the Fourth Proportional to 3,651.20, 5,487.60 and 3,586.40

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Solution

The fourth proportional to 3,651.20, 5,487.60 and 3,586.40 is: 5,390.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.20 : 5,487.60 = 3,586.40 : x
  2. Step 2: Convert to fraction form
    3,651.20/5,487.60 = 3,586.40/x
  3. Step 3: Cross multiply
    3,651.20x = 5,487.60 × 3,586.40
  4. Step 4: Simplify right side
    3,651.20x = 19,680,728.64
  5. Step 5: Solve for x
    x = 19,680,728.64/3,651.20
  6. Step 6: Final answer
    x = 5,390.21

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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.