Home / 1,367.98-2,038.97-1,290.14

Finding the Fourth Proportional to 1,367.98, 2,038.97 and 1,290.14

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Solution

The fourth proportional to 1,367.98, 2,038.97 and 1,290.14 is: 1,922.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.98 : 2,038.97 = 1,290.14 : x
  2. Step 2: Convert to fraction form
    1,367.98/2,038.97 = 1,290.14/x
  3. Step 3: Cross multiply
    1,367.98x = 2,038.97 × 1,290.14
  4. Step 4: Simplify right side
    1,367.98x = 2,630,552.59
  5. Step 5: Solve for x
    x = 2,630,552.59/1,367.98
  6. Step 6: Final answer
    x = 1,922.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.