Home / 1,971.73-2,720.95-1,087.51

Finding the Fourth Proportional to 1,971.73, 2,720.95 and 1,087.51

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Solution

The fourth proportional to 1,971.73, 2,720.95 and 1,087.51 is: 1,500.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.73 : 2,720.95 = 1,087.51 : x
  2. Step 2: Convert to fraction form
    1,971.73/2,720.95 = 1,087.51/x
  3. Step 3: Cross multiply
    1,971.73x = 2,720.95 × 1,087.51
  4. Step 4: Simplify right side
    1,971.73x = 2,959,060.33
  5. Step 5: Solve for x
    x = 2,959,060.33/1,971.73
  6. Step 6: Final answer
    x = 1,500.74

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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.