Home / 8,678.81-11,976.75-4,699.92

Finding the Fourth Proportional to 8,678.81, 11,976.75 and 4,699.92

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Solution

The fourth proportional to 8,678.81, 11,976.75 and 4,699.92 is: 6,485.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.81 : 11,976.75 = 4,699.92 : x
  2. Step 2: Convert to fraction form
    8,678.81/11,976.75 = 4,699.92/x
  3. Step 3: Cross multiply
    8,678.81x = 11,976.75 × 4,699.92
  4. Step 4: Simplify right side
    8,678.81x = 56,289,766.86
  5. Step 5: Solve for x
    x = 56,289,766.86/8,678.81
  6. Step 6: Final answer
    x = 6,485.89

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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.