Home / 1,899.79-2,621.40-1,269.31

Finding the Fourth Proportional to 1,899.79, 2,621.40 and 1,269.31

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Solution

The fourth proportional to 1,899.79, 2,621.40 and 1,269.31 is: 1,751.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.79 : 2,621.40 = 1,269.31 : x
  2. Step 2: Convert to fraction form
    1,899.79/2,621.40 = 1,269.31/x
  3. Step 3: Cross multiply
    1,899.79x = 2,621.40 × 1,269.31
  4. Step 4: Simplify right side
    1,899.79x = 3,327,357.92
  5. Step 5: Solve for x
    x = 3,327,357.92/1,899.79
  6. Step 6: Final answer
    x = 1,751.43

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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.