Home / 1,954.18-2,694.74-1,290.18

Finding the Fourth Proportional to 1,954.18, 2,694.74 and 1,290.18

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Solution

The fourth proportional to 1,954.18, 2,694.74 and 1,290.18 is: 1,779.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.18 : 2,694.74 = 1,290.18 : x
  2. Step 2: Convert to fraction form
    1,954.18/2,694.74 = 1,290.18/x
  3. Step 3: Cross multiply
    1,954.18x = 2,694.74 × 1,290.18
  4. Step 4: Simplify right side
    1,954.18x = 3,476,699.65
  5. Step 5: Solve for x
    x = 3,476,699.65/1,954.18
  6. Step 6: Final answer
    x = 1,779.11

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1.5x scale

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.