Home / 2,155-2,973.44-1,270.48

Finding the Fourth Proportional to 2,155, 2,973.44 and 1,270.48

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Solution

The fourth proportional to 2,155, 2,973.44 and 1,270.48 is: 1,752.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155 : 2,973.44 = 1,270.48 : x
  2. Step 2: Convert to fraction form
    2,155/2,973.44 = 1,270.48/x
  3. Step 3: Cross multiply
    2,155x = 2,973.44 × 1,270.48
  4. Step 4: Simplify right side
    2,155x = 3,777,696.05
  5. Step 5: Solve for x
    x = 3,777,696.05/2,155
  6. Step 6: Final answer
    x = 1,752.99

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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.