Home / 1,678.04-2,315.68-1,174.60

Finding the Fourth Proportional to 1,678.04, 2,315.68 and 1,174.60

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Solution

The fourth proportional to 1,678.04, 2,315.68 and 1,174.60 is: 1,620.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.04 : 2,315.68 = 1,174.60 : x
  2. Step 2: Convert to fraction form
    1,678.04/2,315.68 = 1,174.60/x
  3. Step 3: Cross multiply
    1,678.04x = 2,315.68 × 1,174.60
  4. Step 4: Simplify right side
    1,678.04x = 2,719,997.73
  5. Step 5: Solve for x
    x = 2,719,997.73/1,678.04
  6. Step 6: Final answer
    x = 1,620.94

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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.