Home / 2,007.63-3,011.48-1,318.68

Finding the Fourth Proportional to 2,007.63, 3,011.48 and 1,318.68

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Solution

The fourth proportional to 2,007.63, 3,011.48 and 1,318.68 is: 1,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.63 : 3,011.48 = 1,318.68 : x
  2. Step 2: Convert to fraction form
    2,007.63/3,011.48 = 1,318.68/x
  3. Step 3: Cross multiply
    2,007.63x = 3,011.48 × 1,318.68
  4. Step 4: Simplify right side
    2,007.63x = 3,971,171.85
  5. Step 5: Solve for x
    x = 3,971,171.85/2,007.63
  6. Step 6: Final answer
    x = 1,978.04

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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.