Home / 1,954.26-2,695.86-1,290.24

Finding the Fourth Proportional to 1,954.26, 2,695.86 and 1,290.24

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Solution

The fourth proportional to 1,954.26, 2,695.86 and 1,290.24 is: 1,779.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.26 : 2,695.86 = 1,290.24 : x
  2. Step 2: Convert to fraction form
    1,954.26/2,695.86 = 1,290.24/x
  3. Step 3: Cross multiply
    1,954.26x = 2,695.86 × 1,290.24
  4. Step 4: Simplify right side
    1,954.26x = 3,478,306.41
  5. Step 5: Solve for x
    x = 3,478,306.41/1,954.26
  6. Step 6: Final answer
    x = 1,779.86

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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.