Home / 2,390.19-3,581.80-1,698.20

Finding the Fourth Proportional to 2,390.19, 3,581.80 and 1,698.20

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Solution

The fourth proportional to 2,390.19, 3,581.80 and 1,698.20 is: 2,544.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.19 : 3,581.80 = 1,698.20 : x
  2. Step 2: Convert to fraction form
    2,390.19/3,581.80 = 1,698.20/x
  3. Step 3: Cross multiply
    2,390.19x = 3,581.80 × 1,698.20
  4. Step 4: Simplify right side
    2,390.19x = 6,082,617.47
  5. Step 5: Solve for x
    x = 6,082,617.47/2,390.19
  6. Step 6: Final answer
    x = 2,544.83

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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.