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Finding the Fourth Proportional to 8,858, 13,292.76 and 3,386

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Solution

The fourth proportional to 8,858, 13,292.76 and 3,386 is: 5,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858 : 13,292.76 = 3,386 : x
  2. Step 2: Convert to fraction form
    8,858/13,292.76 = 3,386/x
  3. Step 3: Cross multiply
    8,858x = 13,292.76 × 3,386
  4. Step 4: Simplify right side
    8,858x = 45,009,285.36
  5. Step 5: Solve for x
    x = 45,009,285.36/8,858
  6. Step 6: Final answer
    x = 5,081.20

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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.