Home / 3,128.68-4,688.36-2,852.07

Finding the Fourth Proportional to 3,128.68, 4,688.36 and 2,852.07

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Solution

The fourth proportional to 3,128.68, 4,688.36 and 2,852.07 is: 4,273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.68 : 4,688.36 = 2,852.07 : x
  2. Step 2: Convert to fraction form
    3,128.68/4,688.36 = 2,852.07/x
  3. Step 3: Cross multiply
    3,128.68x = 4,688.36 × 2,852.07
  4. Step 4: Simplify right side
    3,128.68x = 13,371,530.91
  5. Step 5: Solve for x
    x = 13,371,530.91/3,128.68
  6. Step 6: Final answer
    x = 4,273.86

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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.