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Finding the Fourth Proportional to 4,783.74, 7,173.80 and 1,861.68

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Solution

The fourth proportional to 4,783.74, 7,173.80 and 1,861.68 is: 2,791.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,783.74 : 7,173.80 = 1,861.68 : x
  2. Step 2: Convert to fraction form
    4,783.74/7,173.80 = 1,861.68/x
  3. Step 3: Cross multiply
    4,783.74x = 7,173.80 × 1,861.68
  4. Step 4: Simplify right side
    4,783.74x = 13,355,319.98
  5. Step 5: Solve for x
    x = 13,355,319.98/4,783.74
  6. Step 6: Final answer
    x = 2,791.82

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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.