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Finding the Fourth Proportional to 8,913.76, 13,370.40 and 2,673.76

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Solution

The fourth proportional to 8,913.76, 13,370.40 and 2,673.76 is: 4,010.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.76 : 13,370.40 = 2,673.76 : x
  2. Step 2: Convert to fraction form
    8,913.76/13,370.40 = 2,673.76/x
  3. Step 3: Cross multiply
    8,913.76x = 13,370.40 × 2,673.76
  4. Step 4: Simplify right side
    8,913.76x = 35,749,240.70
  5. Step 5: Solve for x
    x = 35,749,240.70/8,913.76
  6. Step 6: Final answer
    x = 4,010.57

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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.