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Finding the Fourth Proportional to 4,269.63, 6,407.15 and 1,672.50

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Solution

The fourth proportional to 4,269.63, 6,407.15 and 1,672.50 is: 2,509.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,269.63 : 6,407.15 = 1,672.50 : x
  2. Step 2: Convert to fraction form
    4,269.63/6,407.15 = 1,672.50/x
  3. Step 3: Cross multiply
    4,269.63x = 6,407.15 × 1,672.50
  4. Step 4: Simplify right side
    4,269.63x = 10,715,958.38
  5. Step 5: Solve for x
    x = 10,715,958.38/4,269.63
  6. Step 6: Final answer
    x = 2,509.81

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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.