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Finding the Fourth Proportional to 3,421.87, 5,132.19 and 956.08

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Solution

The fourth proportional to 3,421.87, 5,132.19 and 956.08 is: 1,433.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.87 : 5,132.19 = 956.08 : x
  2. Step 2: Convert to fraction form
    3,421.87/5,132.19 = 956.08/x
  3. Step 3: Cross multiply
    3,421.87x = 5,132.19 × 956.08
  4. Step 4: Simplify right side
    3,421.87x = 4,906,771.71
  5. Step 5: Solve for x
    x = 4,906,771.71/3,421.87
  6. Step 6: Final answer
    x = 1,433.94

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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.