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Finding the Fourth Proportional to 3,571.72, 5,337.10 and 2,722.72

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Solution

The fourth proportional to 3,571.72, 5,337.10 and 2,722.72 is: 4,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.72 : 5,337.10 = 2,722.72 : x
  2. Step 2: Convert to fraction form
    3,571.72/5,337.10 = 2,722.72/x
  3. Step 3: Cross multiply
    3,571.72x = 5,337.10 × 2,722.72
  4. Step 4: Simplify right side
    3,571.72x = 14,531,428.91
  5. Step 5: Solve for x
    x = 14,531,428.91/3,571.72
  6. Step 6: Final answer
    x = 4,068.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.