Home / 4,678.55-7,018.13-1,391.37

Finding the Fourth Proportional to 4,678.55, 7,018.13 and 1,391.37

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Solution

The fourth proportional to 4,678.55, 7,018.13 and 1,391.37 is: 2,087.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.55 : 7,018.13 = 1,391.37 : x
  2. Step 2: Convert to fraction form
    4,678.55/7,018.13 = 1,391.37/x
  3. Step 3: Cross multiply
    4,678.55x = 7,018.13 × 1,391.37
  4. Step 4: Simplify right side
    4,678.55x = 9,764,819.02
  5. Step 5: Solve for x
    x = 9,764,819.02/4,678.55
  6. Step 6: Final answer
    x = 2,087.15

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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.