Home / 1,136.23-1,570.79-1,125.83

Finding the Fourth Proportional to 1,136.23, 1,570.79 and 1,125.83

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Solution

The fourth proportional to 1,136.23, 1,570.79 and 1,125.83 is: 1,556.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136.23 : 1,570.79 = 1,125.83 : x
  2. Step 2: Convert to fraction form
    1,136.23/1,570.79 = 1,125.83/x
  3. Step 3: Cross multiply
    1,136.23x = 1,570.79 × 1,125.83
  4. Step 4: Simplify right side
    1,136.23x = 1,768,445.03
  5. Step 5: Solve for x
    x = 1,768,445.03/1,136.23
  6. Step 6: Final answer
    x = 1,556.42

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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.