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Finding the Fourth Proportional to 8,455.53, 11,663.94 and 4,918.35

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Solution

The fourth proportional to 8,455.53, 11,663.94 and 4,918.35 is: 6,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.53 : 11,663.94 = 4,918.35 : x
  2. Step 2: Convert to fraction form
    8,455.53/11,663.94 = 4,918.35/x
  3. Step 3: Cross multiply
    8,455.53x = 11,663.94 × 4,918.35
  4. Step 4: Simplify right side
    8,455.53x = 57,367,339.30
  5. Step 5: Solve for x
    x = 57,367,339.30/8,455.53
  6. Step 6: Final answer
    x = 6,784.59

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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.