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Finding the Fourth Proportional to 2,801.79, 3,866.74 and 1,683.38

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Solution

The fourth proportional to 2,801.79, 3,866.74 and 1,683.38 is: 2,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.79 : 3,866.74 = 1,683.38 : x
  2. Step 2: Convert to fraction form
    2,801.79/3,866.74 = 1,683.38/x
  3. Step 3: Cross multiply
    2,801.79x = 3,866.74 × 1,683.38
  4. Step 4: Simplify right side
    2,801.79x = 6,509,198.24
  5. Step 5: Solve for x
    x = 6,509,198.24/2,801.79
  6. Step 6: Final answer
    x = 2,323.23

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1.5x scale

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.