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Finding the Fourth Proportional to 7,047.72, 10,572.60 and 2,116.72

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Solution

The fourth proportional to 7,047.72, 10,572.60 and 2,116.72 is: 3,175.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047.72 : 10,572.60 = 2,116.72 : x
  2. Step 2: Convert to fraction form
    7,047.72/10,572.60 = 2,116.72/x
  3. Step 3: Cross multiply
    7,047.72x = 10,572.60 × 2,116.72
  4. Step 4: Simplify right side
    7,047.72x = 22,379,233.87
  5. Step 5: Solve for x
    x = 22,379,233.87/7,047.72
  6. Step 6: Final answer
    x = 3,175.39

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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.