Home / 2,758.60-3,804.27-2,128.13

Finding the Fourth Proportional to 2,758.60, 3,804.27 and 2,128.13

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Solution

The fourth proportional to 2,758.60, 3,804.27 and 2,128.13 is: 2,934.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.60 : 3,804.27 = 2,128.13 : x
  2. Step 2: Convert to fraction form
    2,758.60/3,804.27 = 2,128.13/x
  3. Step 3: Cross multiply
    2,758.60x = 3,804.27 × 2,128.13
  4. Step 4: Simplify right side
    2,758.60x = 8,095,962.09
  5. Step 5: Solve for x
    x = 8,095,962.09/2,758.60
  6. Step 6: Final answer
    x = 2,934.81

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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.