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Finding the Fourth Proportional to 9,840.39, 14,747.99 and 5,397.99

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Solution

The fourth proportional to 9,840.39, 14,747.99 and 5,397.99 is: 8,090.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,840.39 : 14,747.99 = 5,397.99 : x
  2. Step 2: Convert to fraction form
    9,840.39/14,747.99 = 5,397.99/x
  3. Step 3: Cross multiply
    9,840.39x = 14,747.99 × 5,397.99
  4. Step 4: Simplify right side
    9,840.39x = 79,609,475.55
  5. Step 5: Solve for x
    x = 79,609,475.55/9,840.39
  6. Step 6: Final answer
    x = 8,090.07

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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.