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Finding the Fourth Proportional to 4,692, 6,474.30 and 3,986.70

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Solution

The fourth proportional to 4,692, 6,474.30 and 3,986.70 is: 5,501.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,692 : 6,474.30 = 3,986.70 : x
  2. Step 2: Convert to fraction form
    4,692/6,474.30 = 3,986.70/x
  3. Step 3: Cross multiply
    4,692x = 6,474.30 × 3,986.70
  4. Step 4: Simplify right side
    4,692x = 25,811,091.81
  5. Step 5: Solve for x
    x = 25,811,091.81/4,692
  6. Step 6: Final answer
    x = 5,501.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.