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Finding the Fourth Proportional to 5,672.70, 8,511.48 and 1,972.91

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Solution

The fourth proportional to 5,672.70, 8,511.48 and 1,972.91 is: 2,960.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.70 : 8,511.48 = 1,972.91 : x
  2. Step 2: Convert to fraction form
    5,672.70/8,511.48 = 1,972.91/x
  3. Step 3: Cross multiply
    5,672.70x = 8,511.48 × 1,972.91
  4. Step 4: Simplify right side
    5,672.70x = 16,792,405.29
  5. Step 5: Solve for x
    x = 16,792,405.29/5,672.70
  6. Step 6: Final answer
    x = 2,960.21

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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.