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Finding the Fourth Proportional to 8,235.60, 11,365.16 and 4,699.92

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Solution

The fourth proportional to 8,235.60, 11,365.16 and 4,699.92 is: 6,485.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235.60 : 11,365.16 = 4,699.92 : x
  2. Step 2: Convert to fraction form
    8,235.60/11,365.16 = 4,699.92/x
  3. Step 3: Cross multiply
    8,235.60x = 11,365.16 × 4,699.92
  4. Step 4: Simplify right side
    8,235.60x = 53,415,342.79
  5. Step 5: Solve for x
    x = 53,415,342.79/8,235.60
  6. Step 6: Final answer
    x = 6,485.91

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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.