Home / 4,823.91-7,240.32-2,978.64

Finding the Fourth Proportional to 4,823.91, 7,240.32 and 2,978.64

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Solution

The fourth proportional to 4,823.91, 7,240.32 and 2,978.64 is: 4,470.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,823.91 : 7,240.32 = 2,978.64 : x
  2. Step 2: Convert to fraction form
    4,823.91/7,240.32 = 2,978.64/x
  3. Step 3: Cross multiply
    4,823.91x = 7,240.32 × 2,978.64
  4. Step 4: Simplify right side
    4,823.91x = 21,566,306.76
  5. Step 5: Solve for x
    x = 21,566,306.76/4,823.91
  6. Step 6: Final answer
    x = 4,470.71

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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.