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Finding the Fourth Proportional to 9,612, 13,265.37 and 5,421.06

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Solution

The fourth proportional to 9,612, 13,265.37 and 5,421.06 is: 7,481.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,612 : 13,265.37 = 5,421.06 : x
  2. Step 2: Convert to fraction form
    9,612/13,265.37 = 5,421.06/x
  3. Step 3: Cross multiply
    9,612x = 13,265.37 × 5,421.06
  4. Step 4: Simplify right side
    9,612x = 71,912,366.69
  5. Step 5: Solve for x
    x = 71,912,366.69/9,612
  6. Step 6: Final answer
    x = 7,481.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.