Home / 7,001.21-9,661.69-3,857.39

Finding the Fourth Proportional to 7,001.21, 9,661.69 and 3,857.39

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Solution

The fourth proportional to 7,001.21, 9,661.69 and 3,857.39 is: 5,323.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,001.21 : 9,661.69 = 3,857.39 : x
  2. Step 2: Convert to fraction form
    7,001.21/9,661.69 = 3,857.39/x
  3. Step 3: Cross multiply
    7,001.21x = 9,661.69 × 3,857.39
  4. Step 4: Simplify right side
    7,001.21x = 37,268,935.37
  5. Step 5: Solve for x
    x = 37,268,935.37/7,001.21
  6. Step 6: Final answer
    x = 5,323.22

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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.