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Finding the Fourth Proportional to 6,519.58, 8,992.98 and 3,865.12

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Solution

The fourth proportional to 6,519.58, 8,992.98 and 3,865.12 is: 5,331.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,519.58 : 8,992.98 = 3,865.12 : x
  2. Step 2: Convert to fraction form
    6,519.58/8,992.98 = 3,865.12/x
  3. Step 3: Cross multiply
    6,519.58x = 8,992.98 × 3,865.12
  4. Step 4: Simplify right side
    6,519.58x = 34,758,946.86
  5. Step 5: Solve for x
    x = 34,758,946.86/6,519.58
  6. Step 6: Final answer
    x = 5,331.47

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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.