Home / 6,840.36-9,439.56-3,856.14

Finding the Fourth Proportional to 6,840.36, 9,439.56 and 3,856.14

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Solution

The fourth proportional to 6,840.36, 9,439.56 and 3,856.14 is: 5,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840.36 : 9,439.56 = 3,856.14 : x
  2. Step 2: Convert to fraction form
    6,840.36/9,439.56 = 3,856.14/x
  3. Step 3: Cross multiply
    6,840.36x = 9,439.56 × 3,856.14
  4. Step 4: Simplify right side
    6,840.36x = 36,400,264.90
  5. Step 5: Solve for x
    x = 36,400,264.90/6,840.36
  6. Step 6: Final answer
    x = 5,321.40

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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.