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Finding the Fourth Proportional to 8,762.76, 13,146.36 and 2,919.48

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Solution

The fourth proportional to 8,762.76, 13,146.36 and 2,919.48 is: 4,379.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.76 : 13,146.36 = 2,919.48 : x
  2. Step 2: Convert to fraction form
    8,762.76/13,146.36 = 2,919.48/x
  3. Step 3: Cross multiply
    8,762.76x = 13,146.36 × 2,919.48
  4. Step 4: Simplify right side
    8,762.76x = 38,380,535.09
  5. Step 5: Solve for x
    x = 38,380,535.09/8,762.76
  6. Step 6: Final answer
    x = 4,379.96

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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.