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Finding the Fourth Proportional to 6,285.78, 8,668.11 and 5,340.54

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Solution

The fourth proportional to 6,285.78, 8,668.11 and 5,340.54 is: 7,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,285.78 : 8,668.11 = 5,340.54 : x
  2. Step 2: Convert to fraction form
    6,285.78/8,668.11 = 5,340.54/x
  3. Step 3: Cross multiply
    6,285.78x = 8,668.11 × 5,340.54
  4. Step 4: Simplify right side
    6,285.78x = 46,292,388.18
  5. Step 5: Solve for x
    x = 46,292,388.18/6,285.78
  6. Step 6: Final answer
    x = 7,364.62

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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.