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Finding the Fourth Proportional to 5,672.70, 8,505.72 and 1,722.78

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Solution

The fourth proportional to 5,672.70, 8,505.72 and 1,722.78 is: 2,583.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.70 : 8,505.72 = 1,722.78 : x
  2. Step 2: Convert to fraction form
    5,672.70/8,505.72 = 1,722.78/x
  3. Step 3: Cross multiply
    5,672.70x = 8,505.72 × 1,722.78
  4. Step 4: Simplify right side
    5,672.70x = 14,653,484.30
  5. Step 5: Solve for x
    x = 14,653,484.30/5,672.70
  6. Step 6: Final answer
    x = 2,583.16

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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.