Home / 2,157.07-2,975.73-1,272.28

Finding the Fourth Proportional to 2,157.07, 2,975.73 and 1,272.28

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Solution

The fourth proportional to 2,157.07, 2,975.73 and 1,272.28 is: 1,755.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.07 : 2,975.73 = 1,272.28 : x
  2. Step 2: Convert to fraction form
    2,157.07/2,975.73 = 1,272.28/x
  3. Step 3: Cross multiply
    2,157.07x = 2,975.73 × 1,272.28
  4. Step 4: Simplify right side
    2,157.07x = 3,785,961.76
  5. Step 5: Solve for x
    x = 3,785,961.76/2,157.07
  6. Step 6: Final answer
    x = 1,755.14

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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.