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Finding the Fourth Proportional to 6,898.69, 9,508.81 and 4,879.50

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Solution

The fourth proportional to 6,898.69, 9,508.81 and 4,879.50 is: 6,725.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,898.69 : 9,508.81 = 4,879.50 : x
  2. Step 2: Convert to fraction form
    6,898.69/9,508.81 = 4,879.50/x
  3. Step 3: Cross multiply
    6,898.69x = 9,508.81 × 4,879.50
  4. Step 4: Simplify right side
    6,898.69x = 46,398,190.54
  5. Step 5: Solve for x
    x = 46,398,190.54/6,898.69
  6. Step 6: Final answer
    x = 6,725.65

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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.