Home / 3,128.52-4,688.64-1,664.52

Finding the Fourth Proportional to 3,128.52, 4,688.64 and 1,664.52

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Solution

The fourth proportional to 3,128.52, 4,688.64 and 1,664.52 is: 2,494.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.52 : 4,688.64 = 1,664.52 : x
  2. Step 2: Convert to fraction form
    3,128.52/4,688.64 = 1,664.52/x
  3. Step 3: Cross multiply
    3,128.52x = 4,688.64 × 1,664.52
  4. Step 4: Simplify right side
    3,128.52x = 7,804,335.05
  5. Step 5: Solve for x
    x = 7,804,335.05/3,128.52
  6. Step 6: Final answer
    x = 2,494.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.