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Finding the Fourth Proportional to 8,317.73, 11,477.79 and 4,780.28

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Solution

The fourth proportional to 8,317.73, 11,477.79 and 4,780.28 is: 6,596.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.73 : 11,477.79 = 4,780.28 : x
  2. Step 2: Convert to fraction form
    8,317.73/11,477.79 = 4,780.28/x
  3. Step 3: Cross multiply
    8,317.73x = 11,477.79 × 4,780.28
  4. Step 4: Simplify right side
    8,317.73x = 54,866,992.59
  5. Step 5: Solve for x
    x = 54,866,992.59/8,317.73
  6. Step 6: Final answer
    x = 6,596.39

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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.