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Finding the Fourth Proportional to 6,873.85, 9,484.46 and 3,890.41

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Solution

The fourth proportional to 6,873.85, 9,484.46 and 3,890.41 is: 5,367.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,873.85 : 9,484.46 = 3,890.41 : x
  2. Step 2: Convert to fraction form
    6,873.85/9,484.46 = 3,890.41/x
  3. Step 3: Cross multiply
    6,873.85x = 9,484.46 × 3,890.41
  4. Step 4: Simplify right side
    6,873.85x = 36,898,390.61
  5. Step 5: Solve for x
    x = 36,898,390.61/6,873.85
  6. Step 6: Final answer
    x = 5,367.94

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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.