Home / 4,939.47-7,409.21-1,979.25

Finding the Fourth Proportional to 4,939.47, 7,409.21 and 1,979.25

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Solution

The fourth proportional to 4,939.47, 7,409.21 and 1,979.25 is: 2,968.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.47 : 7,409.21 = 1,979.25 : x
  2. Step 2: Convert to fraction form
    4,939.47/7,409.21 = 1,979.25/x
  3. Step 3: Cross multiply
    4,939.47x = 7,409.21 × 1,979.25
  4. Step 4: Simplify right side
    4,939.47x = 14,664,678.89
  5. Step 5: Solve for x
    x = 14,664,678.89/4,939.47
  6. Step 6: Final answer
    x = 2,968.88

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Similar ratio
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1.5x scale

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.