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Finding the Fourth Proportional to 6,783.90, 9,360.70 and 3,799.86

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Solution

The fourth proportional to 6,783.90, 9,360.70 and 3,799.86 is: 5,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,783.90 : 9,360.70 = 3,799.86 : x
  2. Step 2: Convert to fraction form
    6,783.90/9,360.70 = 3,799.86/x
  3. Step 3: Cross multiply
    6,783.90x = 9,360.70 × 3,799.86
  4. Step 4: Simplify right side
    6,783.90x = 35,569,349.50
  5. Step 5: Solve for x
    x = 35,569,349.50/6,783.90
  6. Step 6: Final answer
    x = 5,243.20

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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.