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Finding the Fourth Proportional to 8,783.86, 12,125.69 and 5,601.43

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Solution

The fourth proportional to 8,783.86, 12,125.69 and 5,601.43 is: 7,732.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.86 : 12,125.69 = 5,601.43 : x
  2. Step 2: Convert to fraction form
    8,783.86/12,125.69 = 5,601.43/x
  3. Step 3: Cross multiply
    8,783.86x = 12,125.69 × 5,601.43
  4. Step 4: Simplify right side
    8,783.86x = 67,921,203.74
  5. Step 5: Solve for x
    x = 67,921,203.74/8,783.86
  6. Step 6: Final answer
    x = 7,732.50

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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.