Home / 1,421.90-1,961.67-1,049.76

Finding the Fourth Proportional to 1,421.90, 1,961.67 and 1,049.76

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Solution

The fourth proportional to 1,421.90, 1,961.67 and 1,049.76 is: 1,448.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.90 : 1,961.67 = 1,049.76 : x
  2. Step 2: Convert to fraction form
    1,421.90/1,961.67 = 1,049.76/x
  3. Step 3: Cross multiply
    1,421.90x = 1,961.67 × 1,049.76
  4. Step 4: Simplify right side
    1,421.90x = 2,059,282.70
  5. Step 5: Solve for x
    x = 2,059,282.70/1,421.90
  6. Step 6: Final answer
    x = 1,448.27

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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.