Home / 2,051.26-2,829.68-1,388.35

Finding the Fourth Proportional to 2,051.26, 2,829.68 and 1,388.35

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Solution

The fourth proportional to 2,051.26, 2,829.68 and 1,388.35 is: 1,915.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,051.26 : 2,829.68 = 1,388.35 : x
  2. Step 2: Convert to fraction form
    2,051.26/2,829.68 = 1,388.35/x
  3. Step 3: Cross multiply
    2,051.26x = 2,829.68 × 1,388.35
  4. Step 4: Simplify right side
    2,051.26x = 3,928,586.23
  5. Step 5: Solve for x
    x = 3,928,586.23/2,051.26
  6. Step 6: Final answer
    x = 1,915.21

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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.