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Finding the Fourth Proportional to 6,904.95, 9,528.25 and 3,879.84

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Solution

The fourth proportional to 6,904.95, 9,528.25 and 3,879.84 is: 5,353.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,904.95 : 9,528.25 = 3,879.84 : x
  2. Step 2: Convert to fraction form
    6,904.95/9,528.25 = 3,879.84/x
  3. Step 3: Cross multiply
    6,904.95x = 9,528.25 × 3,879.84
  4. Step 4: Simplify right side
    6,904.95x = 36,968,085.48
  5. Step 5: Solve for x
    x = 36,968,085.48/6,904.95
  6. Step 6: Final answer
    x = 5,353.85

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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.