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Finding the Fourth Proportional to 9,854.74, 13,599.06 and 5,378.38

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Solution

The fourth proportional to 9,854.74, 13,599.06 and 5,378.38 is: 7,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,854.74 : 13,599.06 = 5,378.38 : x
  2. Step 2: Convert to fraction form
    9,854.74/13,599.06 = 5,378.38/x
  3. Step 3: Cross multiply
    9,854.74x = 13,599.06 × 5,378.38
  4. Step 4: Simplify right side
    9,854.74x = 73,140,912.32
  5. Step 5: Solve for x
    x = 73,140,912.32/9,854.74
  6. Step 6: Final answer
    x = 7,421.90

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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.