Home / 1,291.21-1,941.09-1,049.42

Finding the Fourth Proportional to 1,291.21, 1,941.09 and 1,049.42

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Solution

The fourth proportional to 1,291.21, 1,941.09 and 1,049.42 is: 1,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.21 : 1,941.09 = 1,049.42 : x
  2. Step 2: Convert to fraction form
    1,291.21/1,941.09 = 1,049.42/x
  3. Step 3: Cross multiply
    1,291.21x = 1,941.09 × 1,049.42
  4. Step 4: Simplify right side
    1,291.21x = 2,037,018.67
  5. Step 5: Solve for x
    x = 2,037,018.67/1,291.21
  6. Step 6: Final answer
    x = 1,577.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.