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Finding the Fourth Proportional to 9,815.92, 13,546.02 and 5,339.68

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Solution

The fourth proportional to 9,815.92, 13,546.02 and 5,339.68 is: 7,368.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,815.92 : 13,546.02 = 5,339.68 : x
  2. Step 2: Convert to fraction form
    9,815.92/13,546.02 = 5,339.68/x
  3. Step 3: Cross multiply
    9,815.92x = 13,546.02 × 5,339.68
  4. Step 4: Simplify right side
    9,815.92x = 72,331,412.07
  5. Step 5: Solve for x
    x = 72,331,412.07/9,815.92
  6. Step 6: Final answer
    x = 7,368.79

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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.