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Finding the Fourth Proportional to 8,371.50, 12,561.57 and 4,267.50

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Solution

The fourth proportional to 8,371.50, 12,561.57 and 4,267.50 is: 6,403.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.50 : 12,561.57 = 4,267.50 : x
  2. Step 2: Convert to fraction form
    8,371.50/12,561.57 = 4,267.50/x
  3. Step 3: Cross multiply
    8,371.50x = 12,561.57 × 4,267.50
  4. Step 4: Simplify right side
    8,371.50x = 53,606,499.98
  5. Step 5: Solve for x
    x = 53,606,499.98/8,371.50
  6. Step 6: Final answer
    x = 6,403.45

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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.