Home / 8,678.13-11,975.85-4,699.23

Finding the Fourth Proportional to 8,678.13, 11,975.85 and 4,699.23

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Solution

The fourth proportional to 8,678.13, 11,975.85 and 4,699.23 is: 6,484.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.13 : 11,975.85 = 4,699.23 : x
  2. Step 2: Convert to fraction form
    8,678.13/11,975.85 = 4,699.23/x
  3. Step 3: Cross multiply
    8,678.13x = 11,975.85 × 4,699.23
  4. Step 4: Simplify right side
    8,678.13x = 56,277,273.60
  5. Step 5: Solve for x
    x = 56,277,273.60/8,678.13
  6. Step 6: Final answer
    x = 6,484.95

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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.