Home / 2,939.80-4,053.36-2,152.48

Finding the Fourth Proportional to 2,939.80, 4,053.36 and 2,152.48

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Solution

The fourth proportional to 2,939.80, 4,053.36 and 2,152.48 is: 2,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.80 : 4,053.36 = 2,152.48 : x
  2. Step 2: Convert to fraction form
    2,939.80/4,053.36 = 2,152.48/x
  3. Step 3: Cross multiply
    2,939.80x = 4,053.36 × 2,152.48
  4. Step 4: Simplify right side
    2,939.80x = 8,724,776.33
  5. Step 5: Solve for x
    x = 8,724,776.33/2,939.80
  6. Step 6: Final answer
    x = 2,967.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.