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Finding the Fourth Proportional to 8,683.35, 11,978.46 and 5,326.89

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Solution

The fourth proportional to 8,683.35, 11,978.46 and 5,326.89 is: 7,348.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.35 : 11,978.46 = 5,326.89 : x
  2. Step 2: Convert to fraction form
    8,683.35/11,978.46 = 5,326.89/x
  3. Step 3: Cross multiply
    8,683.35x = 11,978.46 × 5,326.89
  4. Step 4: Simplify right side
    8,683.35x = 63,807,938.79
  5. Step 5: Solve for x
    x = 63,807,938.79/8,683.35
  6. Step 6: Final answer
    x = 7,348.31

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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.