Home / 2,816.16-3,886.80-1,682.10

Finding the Fourth Proportional to 2,816.16, 3,886.80 and 1,682.10

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Solution

The fourth proportional to 2,816.16, 3,886.80 and 1,682.10 is: 2,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.16 : 3,886.80 = 1,682.10 : x
  2. Step 2: Convert to fraction form
    2,816.16/3,886.80 = 1,682.10/x
  3. Step 3: Cross multiply
    2,816.16x = 3,886.80 × 1,682.10
  4. Step 4: Simplify right side
    2,816.16x = 6,537,986.28
  5. Step 5: Solve for x
    x = 6,537,986.28/2,816.16
  6. Step 6: Final answer
    x = 2,321.60

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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.