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Finding the Fourth Proportional to 3,423.81, 5,134.64 and 958.44

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Solution

The fourth proportional to 3,423.81, 5,134.64 and 958.44 is: 1,437.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.81 : 5,134.64 = 958.44 : x
  2. Step 2: Convert to fraction form
    3,423.81/5,134.64 = 958.44/x
  3. Step 3: Cross multiply
    3,423.81x = 5,134.64 × 958.44
  4. Step 4: Simplify right side
    3,423.81x = 4,921,239.57
  5. Step 5: Solve for x
    x = 4,921,239.57/3,423.81
  6. Step 6: Final answer
    x = 1,437.36

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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.