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Finding the Fourth Proportional to 8,792.08, 12,138.88 and 5,439.82

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Solution

The fourth proportional to 8,792.08, 12,138.88 and 5,439.82 is: 7,510.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,792.08 : 12,138.88 = 5,439.82 : x
  2. Step 2: Convert to fraction form
    8,792.08/12,138.88 = 5,439.82/x
  3. Step 3: Cross multiply
    8,792.08x = 12,138.88 × 5,439.82
  4. Step 4: Simplify right side
    8,792.08x = 66,033,305.34
  5. Step 5: Solve for x
    x = 66,033,305.34/8,792.08
  6. Step 6: Final answer
    x = 7,510.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.