Home / 7,141.03-9,855.08-3,998.23

Finding the Fourth Proportional to 7,141.03, 9,855.08 and 3,998.23

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Solution

The fourth proportional to 7,141.03, 9,855.08 and 3,998.23 is: 5,517.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.03 : 9,855.08 = 3,998.23 : x
  2. Step 2: Convert to fraction form
    7,141.03/9,855.08 = 3,998.23/x
  3. Step 3: Cross multiply
    7,141.03x = 9,855.08 × 3,998.23
  4. Step 4: Simplify right side
    7,141.03x = 39,402,876.51
  5. Step 5: Solve for x
    x = 39,402,876.51/7,141.03
  6. Step 6: Final answer
    x = 5,517.81

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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.