Home / 2,620.83-3,931.28-673.03

Finding the Fourth Proportional to 2,620.83, 3,931.28 and 673.03

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Solution

The fourth proportional to 2,620.83, 3,931.28 and 673.03 is: 1,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.83 : 3,931.28 = 673.03 : x
  2. Step 2: Convert to fraction form
    2,620.83/3,931.28 = 673.03/x
  3. Step 3: Cross multiply
    2,620.83x = 3,931.28 × 673.03
  4. Step 4: Simplify right side
    2,620.83x = 2,645,888.29
  5. Step 5: Solve for x
    x = 2,645,888.29/2,620.83
  6. Step 6: Final answer
    x = 1,009.56

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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.