Home / 1,969.83-2,718.36-1,085.58

Finding the Fourth Proportional to 1,969.83, 2,718.36 and 1,085.58

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Solution

The fourth proportional to 1,969.83, 2,718.36 and 1,085.58 is: 1,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.83 : 2,718.36 = 1,085.58 : x
  2. Step 2: Convert to fraction form
    1,969.83/2,718.36 = 1,085.58/x
  3. Step 3: Cross multiply
    1,969.83x = 2,718.36 × 1,085.58
  4. Step 4: Simplify right side
    1,969.83x = 2,950,997.25
  5. Step 5: Solve for x
    x = 2,950,997.25/1,969.83
  6. Step 6: Final answer
    x = 1,498.10

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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.