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Finding the Fourth Proportional to 8,521.60, 11,759.60 and 4,795.60

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Solution

The fourth proportional to 8,521.60, 11,759.60 and 4,795.60 is: 6,617.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.60 : 11,759.60 = 4,795.60 : x
  2. Step 2: Convert to fraction form
    8,521.60/11,759.60 = 4,795.60/x
  3. Step 3: Cross multiply
    8,521.60x = 11,759.60 × 4,795.60
  4. Step 4: Simplify right side
    8,521.60x = 56,394,337.76
  5. Step 5: Solve for x
    x = 56,394,337.76/8,521.60
  6. Step 6: Final answer
    x = 6,617.81

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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.