Home / 4,678.24-7,018.68-1,391.47

Finding the Fourth Proportional to 4,678.24, 7,018.68 and 1,391.47

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Solution

The fourth proportional to 4,678.24, 7,018.68 and 1,391.47 is: 2,087.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.24 : 7,018.68 = 1,391.47 : x
  2. Step 2: Convert to fraction form
    4,678.24/7,018.68 = 1,391.47/x
  3. Step 3: Cross multiply
    4,678.24x = 7,018.68 × 1,391.47
  4. Step 4: Simplify right side
    4,678.24x = 9,766,282.66
  5. Step 5: Solve for x
    x = 9,766,282.66/4,678.24
  6. Step 6: Final answer
    x = 2,087.60

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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.