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Finding the Fourth Proportional to 7,144.34, 9,859.34 and 4,160.30

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Solution

The fourth proportional to 7,144.34, 9,859.34 and 4,160.30 is: 5,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.34 : 9,859.34 = 4,160.30 : x
  2. Step 2: Convert to fraction form
    7,144.34/9,859.34 = 4,160.30/x
  3. Step 3: Cross multiply
    7,144.34x = 9,859.34 × 4,160.30
  4. Step 4: Simplify right side
    7,144.34x = 41,017,847.25
  5. Step 5: Solve for x
    x = 41,017,847.25/7,144.34
  6. Step 6: Final answer
    x = 5,741.30

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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.