Home / 3,656.72-5,478.60-2,543.78

Finding the Fourth Proportional to 3,656.72, 5,478.60 and 2,543.78

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Solution

The fourth proportional to 3,656.72, 5,478.60 and 2,543.78 is: 3,811.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,656.72 : 5,478.60 = 2,543.78 : x
  2. Step 2: Convert to fraction form
    3,656.72/5,478.60 = 2,543.78/x
  3. Step 3: Cross multiply
    3,656.72x = 5,478.60 × 2,543.78
  4. Step 4: Simplify right side
    3,656.72x = 13,936,353.11
  5. Step 5: Solve for x
    x = 13,936,353.11/3,656.72
  6. Step 6: Final answer
    x = 3,811.16

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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.