Home / 3,128.93-4,308.09-2,655.84

Finding the Fourth Proportional to 3,128.93, 4,308.09 and 2,655.84

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Solution

The fourth proportional to 3,128.93, 4,308.09 and 2,655.84 is: 3,656.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.93 : 4,308.09 = 2,655.84 : x
  2. Step 2: Convert to fraction form
    3,128.93/4,308.09 = 2,655.84/x
  3. Step 3: Cross multiply
    3,128.93x = 4,308.09 × 2,655.84
  4. Step 4: Simplify right side
    3,128.93x = 11,441,579.71
  5. Step 5: Solve for x
    x = 11,441,579.71/3,128.93
  6. Step 6: Final answer
    x = 3,656.71

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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.