Home / 1,768.50-2,653.88-1,111.70

Finding the Fourth Proportional to 1,768.50, 2,653.88 and 1,111.70

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Solution

The fourth proportional to 1,768.50, 2,653.88 and 1,111.70 is: 1,668.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.50 : 2,653.88 = 1,111.70 : x
  2. Step 2: Convert to fraction form
    1,768.50/2,653.88 = 1,111.70/x
  3. Step 3: Cross multiply
    1,768.50x = 2,653.88 × 1,111.70
  4. Step 4: Simplify right side
    1,768.50x = 2,950,319.47
  5. Step 5: Solve for x
    x = 2,950,319.47/1,768.50
  6. Step 6: Final answer
    x = 1,668.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.