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Finding the Fourth Proportional to 8,792.96, 13,190.08 and 2,947.20

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Solution

The fourth proportional to 8,792.96, 13,190.08 and 2,947.20 is: 4,421.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,792.96 : 13,190.08 = 2,947.20 : x
  2. Step 2: Convert to fraction form
    8,792.96/13,190.08 = 2,947.20/x
  3. Step 3: Cross multiply
    8,792.96x = 13,190.08 × 2,947.20
  4. Step 4: Simplify right side
    8,792.96x = 38,873,803.78
  5. Step 5: Solve for x
    x = 38,873,803.78/8,792.96
  6. Step 6: Final answer
    x = 4,421.01

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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.