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Finding the Fourth Proportional to 4,693, 7,039.98 and 1,615

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Solution

The fourth proportional to 4,693, 7,039.98 and 1,615 is: 2,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,693 : 7,039.98 = 1,615 : x
  2. Step 2: Convert to fraction form
    4,693/7,039.98 = 1,615/x
  3. Step 3: Cross multiply
    4,693x = 7,039.98 × 1,615
  4. Step 4: Simplify right side
    4,693x = 11,369,567.70
  5. Step 5: Solve for x
    x = 11,369,567.70/4,693
  6. Step 6: Final answer
    x = 2,422.67

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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.