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Finding the Fourth Proportional to 2,144.96, 2,960.48 and 1,213.76

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Solution

The fourth proportional to 2,144.96, 2,960.48 and 1,213.76 is: 1,675.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,144.96 : 2,960.48 = 1,213.76 : x
  2. Step 2: Convert to fraction form
    2,144.96/2,960.48 = 1,213.76/x
  3. Step 3: Cross multiply
    2,144.96x = 2,960.48 × 1,213.76
  4. Step 4: Simplify right side
    2,144.96x = 3,593,312.20
  5. Step 5: Solve for x
    x = 3,593,312.20/2,144.96
  6. Step 6: Final answer
    x = 1,675.24

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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.