Home / 5,143.12-7,097.49-2,785.25

Finding the Fourth Proportional to 5,143.12, 7,097.49 and 2,785.25

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Solution

The fourth proportional to 5,143.12, 7,097.49 and 2,785.25 is: 3,843.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.12 : 7,097.49 = 2,785.25 : x
  2. Step 2: Convert to fraction form
    5,143.12/7,097.49 = 2,785.25/x
  3. Step 3: Cross multiply
    5,143.12x = 7,097.49 × 2,785.25
  4. Step 4: Simplify right side
    5,143.12x = 19,768,284.02
  5. Step 5: Solve for x
    x = 19,768,284.02/5,143.12
  6. Step 6: Final answer
    x = 3,843.64

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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.