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Finding the Fourth Proportional to 9,858, 13,604.04 and 5,442

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Solution

The fourth proportional to 9,858, 13,604.04 and 5,442 is: 7,509.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,858 : 13,604.04 = 5,442 : x
  2. Step 2: Convert to fraction form
    9,858/13,604.04 = 5,442/x
  3. Step 3: Cross multiply
    9,858x = 13,604.04 × 5,442
  4. Step 4: Simplify right side
    9,858x = 74,033,185.68
  5. Step 5: Solve for x
    x = 74,033,185.68/9,858
  6. Step 6: Final answer
    x = 7,509.96

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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.