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Finding the Fourth Proportional to 8,455.61, 11,669.27 and 4,729.61

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Solution

The fourth proportional to 8,455.61, 11,669.27 and 4,729.61 is: 6,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.61 : 11,669.27 = 4,729.61 : x
  2. Step 2: Convert to fraction form
    8,455.61/11,669.27 = 4,729.61/x
  3. Step 3: Cross multiply
    8,455.61x = 11,669.27 × 4,729.61
  4. Step 4: Simplify right side
    8,455.61x = 55,191,014.09
  5. Step 5: Solve for x
    x = 55,191,014.09/8,455.61
  6. Step 6: Final answer
    x = 6,527.15

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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.