Home / 1,921.95-2,651.67-1,125.09

Finding the Fourth Proportional to 1,921.95, 2,651.67 and 1,125.09

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Solution

The fourth proportional to 1,921.95, 2,651.67 and 1,125.09 is: 1,552.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.95 : 2,651.67 = 1,125.09 : x
  2. Step 2: Convert to fraction form
    1,921.95/2,651.67 = 1,125.09/x
  3. Step 3: Cross multiply
    1,921.95x = 2,651.67 × 1,125.09
  4. Step 4: Simplify right side
    1,921.95x = 2,983,367.40
  5. Step 5: Solve for x
    x = 2,983,367.40/1,921.95
  6. Step 6: Final answer
    x = 1,552.26

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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.