Home / 1,897.68-2,620.01-1,190.49

Finding the Fourth Proportional to 1,897.68, 2,620.01 and 1,190.49

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Solution

The fourth proportional to 1,897.68, 2,620.01 and 1,190.49 is: 1,643.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.68 : 2,620.01 = 1,190.49 : x
  2. Step 2: Convert to fraction form
    1,897.68/2,620.01 = 1,190.49/x
  3. Step 3: Cross multiply
    1,897.68x = 2,620.01 × 1,190.49
  4. Step 4: Simplify right side
    1,897.68x = 3,119,104.26
  5. Step 5: Solve for x
    x = 3,119,104.26/1,897.68
  6. Step 6: Final answer
    x = 1,643.64

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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.