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Finding the Fourth Proportional to 6,893.54, 9,515.93 and 5,215.48

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Solution

The fourth proportional to 6,893.54, 9,515.93 and 5,215.48 is: 7,199.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,893.54 : 9,515.93 = 5,215.48 : x
  2. Step 2: Convert to fraction form
    6,893.54/9,515.93 = 5,215.48/x
  3. Step 3: Cross multiply
    6,893.54x = 9,515.93 × 5,215.48
  4. Step 4: Simplify right side
    6,893.54x = 49,630,142.60
  5. Step 5: Solve for x
    x = 49,630,142.60/6,893.54
  6. Step 6: Final answer
    x = 7,199.51

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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.