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Finding the Fourth Proportional to 8,643.04, 12,951.60 and 5,176.24

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Solution

The fourth proportional to 8,643.04, 12,951.60 and 5,176.24 is: 7,756.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.04 : 12,951.60 = 5,176.24 : x
  2. Step 2: Convert to fraction form
    8,643.04/12,951.60 = 5,176.24/x
  3. Step 3: Cross multiply
    8,643.04x = 12,951.60 × 5,176.24
  4. Step 4: Simplify right side
    8,643.04x = 67,040,589.98
  5. Step 5: Solve for x
    x = 67,040,589.98/8,643.04
  6. Step 6: Final answer
    x = 7,756.60

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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.