Home / 6,840.20-9,438.30-3,814.64

Finding the Fourth Proportional to 6,840.20, 9,438.30 and 3,814.64

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Solution

The fourth proportional to 6,840.20, 9,438.30 and 3,814.64 is: 5,263.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840.20 : 9,438.30 = 3,814.64 : x
  2. Step 2: Convert to fraction form
    6,840.20/9,438.30 = 3,814.64/x
  3. Step 3: Cross multiply
    6,840.20x = 9,438.30 × 3,814.64
  4. Step 4: Simplify right side
    6,840.20x = 36,003,716.71
  5. Step 5: Solve for x
    x = 36,003,716.71/6,840.20
  6. Step 6: Final answer
    x = 5,263.55

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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.