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Finding the Fourth Proportional to 9,855.47, 13,600.62 and 5,379.26

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Solution

The fourth proportional to 9,855.47, 13,600.62 and 5,379.26 is: 7,423.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.47 : 13,600.62 = 5,379.26 : x
  2. Step 2: Convert to fraction form
    9,855.47/13,600.62 = 5,379.26/x
  3. Step 3: Cross multiply
    9,855.47x = 13,600.62 × 5,379.26
  4. Step 4: Simplify right side
    9,855.47x = 73,161,203.14
  5. Step 5: Solve for x
    x = 73,161,203.14/9,855.47
  6. Step 6: Final answer
    x = 7,423.41

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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.