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Finding the Fourth Proportional to 2,708.12, 4,062.03 and 953.21

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Solution

The fourth proportional to 2,708.12, 4,062.03 and 953.21 is: 1,429.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,708.12 : 4,062.03 = 953.21 : x
  2. Step 2: Convert to fraction form
    2,708.12/4,062.03 = 953.21/x
  3. Step 3: Cross multiply
    2,708.12x = 4,062.03 × 953.21
  4. Step 4: Simplify right side
    2,708.12x = 3,871,967.62
  5. Step 5: Solve for x
    x = 3,871,967.62/2,708.12
  6. Step 6: Final answer
    x = 1,429.76

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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.