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Finding the Fourth Proportional to 9,613.14, 13,266.14 and 5,421.39

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Solution

The fourth proportional to 9,613.14, 13,266.14 and 5,421.39 is: 7,481.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,613.14 : 13,266.14 = 5,421.39 : x
  2. Step 2: Convert to fraction form
    9,613.14/13,266.14 = 5,421.39/x
  3. Step 3: Cross multiply
    9,613.14x = 13,266.14 × 5,421.39
  4. Step 4: Simplify right side
    9,613.14x = 71,920,891.63
  5. Step 5: Solve for x
    x = 71,920,891.63/9,613.14
  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.