Home / 1,136.37-1,574.49-1,111.77

Finding the Fourth Proportional to 1,136.37, 1,574.49 and 1,111.77

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Solution

The fourth proportional to 1,136.37, 1,574.49 and 1,111.77 is: 1,540.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136.37 : 1,574.49 = 1,111.77 : x
  2. Step 2: Convert to fraction form
    1,136.37/1,574.49 = 1,111.77/x
  3. Step 3: Cross multiply
    1,136.37x = 1,574.49 × 1,111.77
  4. Step 4: Simplify right side
    1,136.37x = 1,750,470.75
  5. Step 5: Solve for x
    x = 1,750,470.75/1,136.37
  6. Step 6: Final answer
    x = 1,540.41

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.