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Finding the Fourth Proportional to 8,417.76, 12,628.76 and 2,795.80

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Solution

The fourth proportional to 8,417.76, 12,628.76 and 2,795.80 is: 4,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.76 : 12,628.76 = 2,795.80 : x
  2. Step 2: Convert to fraction form
    8,417.76/12,628.76 = 2,795.80/x
  3. Step 3: Cross multiply
    8,417.76x = 12,628.76 × 2,795.80
  4. Step 4: Simplify right side
    8,417.76x = 35,307,487.21
  5. Step 5: Solve for x
    x = 35,307,487.21/8,417.76
  6. Step 6: Final answer
    x = 4,194.40

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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.