Home / 1,899.68-2,619.84-1,374.80

Finding the Fourth Proportional to 1,899.68, 2,619.84 and 1,374.80

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Solution

The fourth proportional to 1,899.68, 2,619.84 and 1,374.80 is: 1,895.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.68 : 2,619.84 = 1,374.80 : x
  2. Step 2: Convert to fraction form
    1,899.68/2,619.84 = 1,374.80/x
  3. Step 3: Cross multiply
    1,899.68x = 2,619.84 × 1,374.80
  4. Step 4: Simplify right side
    1,899.68x = 3,601,756.03
  5. Step 5: Solve for x
    x = 3,601,756.03/1,899.68
  6. Step 6: Final answer
    x = 1,895.98

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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.