Home / 1,946.09-2,683.79-1,281.79

Finding the Fourth Proportional to 1,946.09, 2,683.79 and 1,281.79

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Solution

The fourth proportional to 1,946.09, 2,683.79 and 1,281.79 is: 1,767.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.09 : 2,683.79 = 1,281.79 : x
  2. Step 2: Convert to fraction form
    1,946.09/2,683.79 = 1,281.79/x
  3. Step 3: Cross multiply
    1,946.09x = 2,683.79 × 1,281.79
  4. Step 4: Simplify right side
    1,946.09x = 3,440,048.47
  5. Step 5: Solve for x
    x = 3,440,048.47/1,946.09
  6. Step 6: Final answer
    x = 1,767.67

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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.