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Finding the Fourth Proportional to 8,347.60, 11,520.60 and 5,322.83

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Solution

The fourth proportional to 8,347.60, 11,520.60 and 5,322.83 is: 7,346.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.60 : 11,520.60 = 5,322.83 : x
  2. Step 2: Convert to fraction form
    8,347.60/11,520.60 = 5,322.83/x
  3. Step 3: Cross multiply
    8,347.60x = 11,520.60 × 5,322.83
  4. Step 4: Simplify right side
    8,347.60x = 61,322,137.70
  5. Step 5: Solve for x
    x = 61,322,137.70/8,347.60
  6. Step 6: Final answer
    x = 7,346.08

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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.