Home / 2,801.78-3,865.08-1,682.18

Finding the Fourth Proportional to 2,801.78, 3,865.08 and 1,682.18

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Solution

The fourth proportional to 2,801.78, 3,865.08 and 1,682.18 is: 2,320.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.78 : 3,865.08 = 1,682.18 : x
  2. Step 2: Convert to fraction form
    2,801.78/3,865.08 = 1,682.18/x
  3. Step 3: Cross multiply
    2,801.78x = 3,865.08 × 1,682.18
  4. Step 4: Simplify right side
    2,801.78x = 6,501,760.27
  5. Step 5: Solve for x
    x = 6,501,760.27/2,801.78
  6. Step 6: Final answer
    x = 2,320.58

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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.