Home / 1,709.97-2,566.77-1,389.21

Finding the Fourth Proportional to 1,709.97, 2,566.77 and 1,389.21

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Solution

The fourth proportional to 1,709.97, 2,566.77 and 1,389.21 is: 2,085.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.97 : 2,566.77 = 1,389.21 : x
  2. Step 2: Convert to fraction form
    1,709.97/2,566.77 = 1,389.21/x
  3. Step 3: Cross multiply
    1,709.97x = 2,566.77 × 1,389.21
  4. Step 4: Simplify right side
    1,709.97x = 3,565,782.55
  5. Step 5: Solve for x
    x = 3,565,782.55/1,709.97
  6. Step 6: Final answer
    x = 2,085.29

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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.