Home / 2,007.88-3,011.85-1,318.93

Finding the Fourth Proportional to 2,007.88, 3,011.85 and 1,318.93

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Solution

The fourth proportional to 2,007.88, 3,011.85 and 1,318.93 is: 1,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.88 : 3,011.85 = 1,318.93 : x
  2. Step 2: Convert to fraction form
    2,007.88/3,011.85 = 1,318.93/x
  3. Step 3: Cross multiply
    2,007.88x = 3,011.85 × 1,318.93
  4. Step 4: Simplify right side
    2,007.88x = 3,972,419.32
  5. Step 5: Solve for x
    x = 3,972,419.32/2,007.88
  6. Step 6: Final answer
    x = 1,978.41

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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.