Home / 1,921.57-2,651.96-1,176.02

Finding the Fourth Proportional to 1,921.57, 2,651.96 and 1,176.02

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Solution

The fourth proportional to 1,921.57, 2,651.96 and 1,176.02 is: 1,623.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.57 : 2,651.96 = 1,176.02 : x
  2. Step 2: Convert to fraction form
    1,921.57/2,651.96 = 1,176.02/x
  3. Step 3: Cross multiply
    1,921.57x = 2,651.96 × 1,176.02
  4. Step 4: Simplify right side
    1,921.57x = 3,118,767.57
  5. Step 5: Solve for x
    x = 3,118,767.57/1,921.57
  6. Step 6: Final answer
    x = 1,623.03

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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.