Home / 6,688.64-9,228.06-3,855.92

Finding the Fourth Proportional to 6,688.64, 9,228.06 and 3,855.92

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Solution

The fourth proportional to 6,688.64, 9,228.06 and 3,855.92 is: 5,319.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,688.64 : 9,228.06 = 3,855.92 : x
  2. Step 2: Convert to fraction form
    6,688.64/9,228.06 = 3,855.92/x
  3. Step 3: Cross multiply
    6,688.64x = 9,228.06 × 3,855.92
  4. Step 4: Simplify right side
    6,688.64x = 35,582,661.12
  5. Step 5: Solve for x
    x = 35,582,661.12/6,688.64
  6. Step 6: Final answer
    x = 5,319.86

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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.