Home / 1,587.97-2,190.64-1,028.93

Finding the Fourth Proportional to 1,587.97, 2,190.64 and 1,028.93

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Solution

The fourth proportional to 1,587.97, 2,190.64 and 1,028.93 is: 1,419.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.97 : 2,190.64 = 1,028.93 : x
  2. Step 2: Convert to fraction form
    1,587.97/2,190.64 = 1,028.93/x
  3. Step 3: Cross multiply
    1,587.97x = 2,190.64 × 1,028.93
  4. Step 4: Simplify right side
    1,587.97x = 2,254,010.07
  5. Step 5: Solve for x
    x = 2,254,010.07/1,587.97
  6. Step 6: Final answer
    x = 1,419.43

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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.