Home / 1,561.35-2,339.26-1,391.85

Finding the Fourth Proportional to 1,561.35, 2,339.26 and 1,391.85

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Solution

The fourth proportional to 1,561.35, 2,339.26 and 1,391.85 is: 2,085.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.35 : 2,339.26 = 1,391.85 : x
  2. Step 2: Convert to fraction form
    1,561.35/2,339.26 = 1,391.85/x
  3. Step 3: Cross multiply
    1,561.35x = 2,339.26 × 1,391.85
  4. Step 4: Simplify right side
    1,561.35x = 3,255,899.03
  5. Step 5: Solve for x
    x = 3,255,899.03/1,561.35
  6. Step 6: Final answer
    x = 2,085.31

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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.