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Finding the Fourth Proportional to 1,990.51, 2,735.00 and 1,862.53

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Solution

The fourth proportional to 1,990.51, 2,735.00 and 1,862.53 is: 2,559.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.51 : 2,735.00 = 1,862.53 : x
  2. Step 2: Convert to fraction form
    1,990.51/2,735.00 = 1,862.53/x
  3. Step 3: Cross multiply
    1,990.51x = 2,735.00 × 1,862.53
  4. Step 4: Simplify right side
    1,990.51x = 5,094,010.38
  5. Step 5: Solve for x
    x = 5,094,010.38/1,990.51
  6. Step 6: Final answer
    x = 2,559.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.