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Finding the Fourth Proportional to 6,888.86, 9,505.98 and 3,904.95

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Solution

The fourth proportional to 6,888.86, 9,505.98 and 3,904.95 is: 5,388.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,888.86 : 9,505.98 = 3,904.95 : x
  2. Step 2: Convert to fraction form
    6,888.86/9,505.98 = 3,904.95/x
  3. Step 3: Cross multiply
    6,888.86x = 9,505.98 × 3,904.95
  4. Step 4: Simplify right side
    6,888.86x = 37,120,376.60
  5. Step 5: Solve for x
    x = 37,120,376.60/6,888.86
  6. Step 6: Final answer
    x = 5,388.47

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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.