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Finding the Fourth Proportional to 8,791.64, 13,124.76 and 8,484.08

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Solution

The fourth proportional to 8,791.64, 13,124.76 and 8,484.08 is: 12,665.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.64 : 13,124.76 = 8,484.08 : x
  2. Step 2: Convert to fraction form
    8,791.64/13,124.76 = 8,484.08/x
  3. Step 3: Cross multiply
    8,791.64x = 13,124.76 × 8,484.08
  4. Step 4: Simplify right side
    8,791.64x = 111,351,513.82
  5. Step 5: Solve for x
    x = 111,351,513.82/8,791.64
  6. Step 6: Final answer
    x = 12,665.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.