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Finding the Fourth Proportional to 3,421.49, 5,132.37 and 956.66

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Solution

The fourth proportional to 3,421.49, 5,132.37 and 956.66 is: 1,435.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.49 : 5,132.37 = 956.66 : x
  2. Step 2: Convert to fraction form
    3,421.49/5,132.37 = 956.66/x
  3. Step 3: Cross multiply
    3,421.49x = 5,132.37 × 956.66
  4. Step 4: Simplify right side
    3,421.49x = 4,909,933.08
  5. Step 5: Solve for x
    x = 4,909,933.08/3,421.49
  6. Step 6: Final answer
    x = 1,435.03

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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.