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Finding the Fourth Proportional to 7,772.55, 10,725.90 and 4,235.79

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Solution

The fourth proportional to 7,772.55, 10,725.90 and 4,235.79 is: 5,845.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.55 : 10,725.90 = 4,235.79 : x
  2. Step 2: Convert to fraction form
    7,772.55/10,725.90 = 4,235.79/x
  3. Step 3: Cross multiply
    7,772.55x = 10,725.90 × 4,235.79
  4. Step 4: Simplify right side
    7,772.55x = 45,432,659.96
  5. Step 5: Solve for x
    x = 45,432,659.96/7,772.55
  6. Step 6: Final answer
    x = 5,845.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.