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Finding the Fourth Proportional to 8,641.58, 11,926.86 and 6,384.63

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Solution

The fourth proportional to 8,641.58, 11,926.86 and 6,384.63 is: 8,811.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.58 : 11,926.86 = 6,384.63 : x
  2. Step 2: Convert to fraction form
    8,641.58/11,926.86 = 6,384.63/x
  3. Step 3: Cross multiply
    8,641.58x = 11,926.86 × 6,384.63
  4. Step 4: Simplify right side
    8,641.58x = 76,148,588.16
  5. Step 5: Solve for x
    x = 76,148,588.16/8,641.58
  6. Step 6: Final answer
    x = 8,811.89

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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.