Home / 1,554.12-2,144.97-890.98

Finding the Fourth Proportional to 1,554.12, 2,144.97 and 890.98

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Solution

The fourth proportional to 1,554.12, 2,144.97 and 890.98 is: 1,229.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.12 : 2,144.97 = 890.98 : x
  2. Step 2: Convert to fraction form
    1,554.12/2,144.97 = 890.98/x
  3. Step 3: Cross multiply
    1,554.12x = 2,144.97 × 890.98
  4. Step 4: Simplify right side
    1,554.12x = 1,911,114.65
  5. Step 5: Solve for x
    x = 1,911,114.65/1,554.12
  6. Step 6: Final answer
    x = 1,229.71

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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.