Home / 3,618.62-5,429.84-1,670.56

Finding the Fourth Proportional to 3,618.62, 5,429.84 and 1,670.56

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Solution

The fourth proportional to 3,618.62, 5,429.84 and 1,670.56 is: 2,506.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.62 : 5,429.84 = 1,670.56 : x
  2. Step 2: Convert to fraction form
    3,618.62/5,429.84 = 1,670.56/x
  3. Step 3: Cross multiply
    3,618.62x = 5,429.84 × 1,670.56
  4. Step 4: Simplify right side
    3,618.62x = 9,070,873.51
  5. Step 5: Solve for x
    x = 9,070,873.51/3,618.62
  6. Step 6: Final answer
    x = 2,506.72

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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.