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Finding the Fourth Proportional to 3,144.42, 4,717.26 and 953.28

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Solution

The fourth proportional to 3,144.42, 4,717.26 and 953.28 is: 1,430.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.42 : 4,717.26 = 953.28 : x
  2. Step 2: Convert to fraction form
    3,144.42/4,717.26 = 953.28/x
  3. Step 3: Cross multiply
    3,144.42x = 4,717.26 × 953.28
  4. Step 4: Simplify right side
    3,144.42x = 4,496,869.61
  5. Step 5: Solve for x
    x = 4,496,869.61/3,144.42
  6. Step 6: Final answer
    x = 1,430.11

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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.