Home / 2,860.25-3,946.52-1,665.09

Finding the Fourth Proportional to 2,860.25, 3,946.52 and 1,665.09

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Solution

The fourth proportional to 2,860.25, 3,946.52 and 1,665.09 is: 2,297.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.25 : 3,946.52 = 1,665.09 : x
  2. Step 2: Convert to fraction form
    2,860.25/3,946.52 = 1,665.09/x
  3. Step 3: Cross multiply
    2,860.25x = 3,946.52 × 1,665.09
  4. Step 4: Simplify right side
    2,860.25x = 6,571,315.15
  5. Step 5: Solve for x
    x = 6,571,315.15/2,860.25
  6. Step 6: Final answer
    x = 2,297.47

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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.