Home / 1,921.02-2,651.39-1,135.27

Finding the Fourth Proportional to 1,921.02, 2,651.39 and 1,135.27

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Solution

The fourth proportional to 1,921.02, 2,651.39 and 1,135.27 is: 1,566.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.02 : 2,651.39 = 1,135.27 : x
  2. Step 2: Convert to fraction form
    1,921.02/2,651.39 = 1,135.27/x
  3. Step 3: Cross multiply
    1,921.02x = 2,651.39 × 1,135.27
  4. Step 4: Simplify right side
    1,921.02x = 3,010,043.53
  5. Step 5: Solve for x
    x = 3,010,043.53/1,921.02
  6. Step 6: Final answer
    x = 1,566.90

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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.