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Finding the Fourth Proportional to 7,025.55, 10,530.21 and 2,640.21

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Solution

The fourth proportional to 7,025.55, 10,530.21 and 2,640.21 is: 3,957.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,025.55 : 10,530.21 = 2,640.21 : x
  2. Step 2: Convert to fraction form
    7,025.55/10,530.21 = 2,640.21/x
  3. Step 3: Cross multiply
    7,025.55x = 10,530.21 × 2,640.21
  4. Step 4: Simplify right side
    7,025.55x = 27,801,965.74
  5. Step 5: Solve for x
    x = 27,801,965.74/7,025.55
  6. Step 6: Final answer
    x = 3,957.27

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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.