Home / 1,966.20-2,946.33-1,315.77

Finding the Fourth Proportional to 1,966.20, 2,946.33 and 1,315.77

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Solution

The fourth proportional to 1,966.20, 2,946.33 and 1,315.77 is: 1,971.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.20 : 2,946.33 = 1,315.77 : x
  2. Step 2: Convert to fraction form
    1,966.20/2,946.33 = 1,315.77/x
  3. Step 3: Cross multiply
    1,966.20x = 2,946.33 × 1,315.77
  4. Step 4: Simplify right side
    1,966.20x = 3,876,692.62
  5. Step 5: Solve for x
    x = 3,876,692.62/1,966.20
  6. Step 6: Final answer
    x = 1,971.67

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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.