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Finding the Fourth Proportional to 8,485.60, 11,709.48 and 4,708.30

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Solution

The fourth proportional to 8,485.60, 11,709.48 and 4,708.30 is: 6,497.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.60 : 11,709.48 = 4,708.30 : x
  2. Step 2: Convert to fraction form
    8,485.60/11,709.48 = 4,708.30/x
  3. Step 3: Cross multiply
    8,485.60x = 11,709.48 × 4,708.30
  4. Step 4: Simplify right side
    8,485.60x = 55,131,744.68
  5. Step 5: Solve for x
    x = 55,131,744.68/8,485.60
  6. Step 6: Final answer
    x = 6,497.09

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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.