Home / 2,155.36-2,972.84-1,270.53

Finding the Fourth Proportional to 2,155.36, 2,972.84 and 1,270.53

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Solution

The fourth proportional to 2,155.36, 2,972.84 and 1,270.53 is: 1,752.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.36 : 2,972.84 = 1,270.53 : x
  2. Step 2: Convert to fraction form
    2,155.36/2,972.84 = 1,270.53/x
  3. Step 3: Cross multiply
    2,155.36x = 2,972.84 × 1,270.53
  4. Step 4: Simplify right side
    2,155.36x = 3,777,093.01
  5. Step 5: Solve for x
    x = 3,777,093.01/2,155.36
  6. Step 6: Final answer
    x = 1,752.42

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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.