Home / 2,151.51-3,228.36-1,631.31

Finding the Fourth Proportional to 2,151.51, 3,228.36 and 1,631.31

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Solution

The fourth proportional to 2,151.51, 3,228.36 and 1,631.31 is: 2,447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.51 : 3,228.36 = 1,631.31 : x
  2. Step 2: Convert to fraction form
    2,151.51/3,228.36 = 1,631.31/x
  3. Step 3: Cross multiply
    2,151.51x = 3,228.36 × 1,631.31
  4. Step 4: Simplify right side
    2,151.51x = 5,266,455.95
  5. Step 5: Solve for x
    x = 5,266,455.95/2,151.51
  6. Step 6: Final answer
    x = 2,447.80

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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.