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Finding the Fourth Proportional to 8,975.94, 12,384.91 and 5,198.87

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Solution

The fourth proportional to 8,975.94, 12,384.91 and 5,198.87 is: 7,173.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.94 : 12,384.91 = 5,198.87 : x
  2. Step 2: Convert to fraction form
    8,975.94/12,384.91 = 5,198.87/x
  3. Step 3: Cross multiply
    8,975.94x = 12,384.91 × 5,198.87
  4. Step 4: Simplify right side
    8,975.94x = 64,387,602.61
  5. Step 5: Solve for x
    x = 64,387,602.61/8,975.94
  6. Step 6: Final answer
    x = 7,173.36

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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.