Home / 8,678.60-11,976.32-4,699.68

Finding the Fourth Proportional to 8,678.60, 11,976.32 and 4,699.68

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Solution

The fourth proportional to 8,678.60, 11,976.32 and 4,699.68 is: 6,485.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.60 : 11,976.32 = 4,699.68 : x
  2. Step 2: Convert to fraction form
    8,678.60/11,976.32 = 4,699.68/x
  3. Step 3: Cross multiply
    8,678.60x = 11,976.32 × 4,699.68
  4. Step 4: Simplify right side
    8,678.60x = 56,284,871.58
  5. Step 5: Solve for x
    x = 56,284,871.58/8,678.60
  6. Step 6: Final answer
    x = 6,485.48

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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.