Home / 6,840.89-9,440.21-3,856.68

Finding the Fourth Proportional to 6,840.89, 9,440.21 and 3,856.68

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Solution

The fourth proportional to 6,840.89, 9,440.21 and 3,856.68 is: 5,322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840.89 : 9,440.21 = 3,856.68 : x
  2. Step 2: Convert to fraction form
    6,840.89/9,440.21 = 3,856.68/x
  3. Step 3: Cross multiply
    6,840.89x = 9,440.21 × 3,856.68
  4. Step 4: Simplify right side
    6,840.89x = 36,407,878.74
  5. Step 5: Solve for x
    x = 36,407,878.74/6,840.89
  6. Step 6: Final answer
    x = 5,322.10

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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.