Home / 4,890-7,323.80-2,939.92

Finding the Fourth Proportional to 4,890, 7,323.80 and 2,939.92

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Solution

The fourth proportional to 4,890, 7,323.80 and 2,939.92 is: 4,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890 : 7,323.80 = 2,939.92 : x
  2. Step 2: Convert to fraction form
    4,890/7,323.80 = 2,939.92/x
  3. Step 3: Cross multiply
    4,890x = 7,323.80 × 2,939.92
  4. Step 4: Simplify right side
    4,890x = 21,531,386.10
  5. Step 5: Solve for x
    x = 21,531,386.10/4,890
  6. Step 6: Final answer
    x = 4,403.15

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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.