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Finding the Fourth Proportional to 3,861.66, 5,794.79 and 1,670.39

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Solution

The fourth proportional to 3,861.66, 5,794.79 and 1,670.39 is: 2,506.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.66 : 5,794.79 = 1,670.39 : x
  2. Step 2: Convert to fraction form
    3,861.66/5,794.79 = 1,670.39/x
  3. Step 3: Cross multiply
    3,861.66x = 5,794.79 × 1,670.39
  4. Step 4: Simplify right side
    3,861.66x = 9,679,521.94
  5. Step 5: Solve for x
    x = 9,679,521.94/3,861.66
  6. Step 6: Final answer
    x = 2,506.57

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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.