Home / 1,902.19-2,628.65-1,372.81

Finding the Fourth Proportional to 1,902.19, 2,628.65 and 1,372.81

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Solution

The fourth proportional to 1,902.19, 2,628.65 and 1,372.81 is: 1,897.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.19 : 2,628.65 = 1,372.81 : x
  2. Step 2: Convert to fraction form
    1,902.19/2,628.65 = 1,372.81/x
  3. Step 3: Cross multiply
    1,902.19x = 2,628.65 × 1,372.81
  4. Step 4: Simplify right side
    1,902.19x = 3,608,637.01
  5. Step 5: Solve for x
    x = 3,608,637.01/1,902.19
  6. Step 6: Final answer
    x = 1,897.10

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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.