Home / 3,618.36-5,421.35-1,976.06

Finding the Fourth Proportional to 3,618.36, 5,421.35 and 1,976.06

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Solution

The fourth proportional to 3,618.36, 5,421.35 and 1,976.06 is: 2,960.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.36 : 5,421.35 = 1,976.06 : x
  2. Step 2: Convert to fraction form
    3,618.36/5,421.35 = 1,976.06/x
  3. Step 3: Cross multiply
    3,618.36x = 5,421.35 × 1,976.06
  4. Step 4: Simplify right side
    3,618.36x = 10,712,931.37
  5. Step 5: Solve for x
    x = 10,712,931.37/3,618.36
  6. Step 6: Final answer
    x = 2,960.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.