Home / 2,136.84-2,948.07-1,297.89

Finding the Fourth Proportional to 2,136.84, 2,948.07 and 1,297.89

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Solution

The fourth proportional to 2,136.84, 2,948.07 and 1,297.89 is: 1,790.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.84 : 2,948.07 = 1,297.89 : x
  2. Step 2: Convert to fraction form
    2,136.84/2,948.07 = 1,297.89/x
  3. Step 3: Cross multiply
    2,136.84x = 2,948.07 × 1,297.89
  4. Step 4: Simplify right side
    2,136.84x = 3,826,270.57
  5. Step 5: Solve for x
    x = 3,826,270.57/2,136.84
  6. Step 6: Final answer
    x = 1,790.62

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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.