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Finding the Fourth Proportional to 7,886.92, 11,804.86 and 5,806.48

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Solution

The fourth proportional to 7,886.92, 11,804.86 and 5,806.48 is: 8,690.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.92 : 11,804.86 = 5,806.48 : x
  2. Step 2: Convert to fraction form
    7,886.92/11,804.86 = 5,806.48/x
  3. Step 3: Cross multiply
    7,886.92x = 11,804.86 × 5,806.48
  4. Step 4: Simplify right side
    7,886.92x = 68,544,683.49
  5. Step 5: Solve for x
    x = 68,544,683.49/7,886.92
  6. Step 6: Final answer
    x = 8,690.93

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1.5x scale

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.