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Finding the Fourth Proportional to 7,152.85, 10,728.36 and 2,767.31

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Solution

The fourth proportional to 7,152.85, 10,728.36 and 2,767.31 is: 4,150.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,152.85 : 10,728.36 = 2,767.31 : x
  2. Step 2: Convert to fraction form
    7,152.85/10,728.36 = 2,767.31/x
  3. Step 3: Cross multiply
    7,152.85x = 10,728.36 × 2,767.31
  4. Step 4: Simplify right side
    7,152.85x = 29,688,644.27
  5. Step 5: Solve for x
    x = 29,688,644.27/7,152.85
  6. Step 6: Final answer
    x = 4,150.60

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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.