Home / 2,137.25-2,946.56-1,918.55

Finding the Fourth Proportional to 2,137.25, 2,946.56 and 1,918.55

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Solution

The fourth proportional to 2,137.25, 2,946.56 and 1,918.55 is: 2,645.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.25 : 2,946.56 = 1,918.55 : x
  2. Step 2: Convert to fraction form
    2,137.25/2,946.56 = 1,918.55/x
  3. Step 3: Cross multiply
    2,137.25x = 2,946.56 × 1,918.55
  4. Step 4: Simplify right side
    2,137.25x = 5,653,098.36
  5. Step 5: Solve for x
    x = 5,653,098.36/2,137.25
  6. Step 6: Final answer
    x = 2,645.04

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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.