Home / 5,475.62-8,211.80-1,778.78

Finding the Fourth Proportional to 5,475.62, 8,211.80 and 1,778.78

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Solution

The fourth proportional to 5,475.62, 8,211.80 and 1,778.78 is: 2,667.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.62 : 8,211.80 = 1,778.78 : x
  2. Step 2: Convert to fraction form
    5,475.62/8,211.80 = 1,778.78/x
  3. Step 3: Cross multiply
    5,475.62x = 8,211.80 × 1,778.78
  4. Step 4: Simplify right side
    5,475.62x = 14,606,985.60
  5. Step 5: Solve for x
    x = 14,606,985.60/5,475.62
  6. Step 6: Final answer
    x = 2,667.64

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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.