Home / 2,939.79-4,056.88-1,820.50

Finding the Fourth Proportional to 2,939.79, 4,056.88 and 1,820.50

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Solution

The fourth proportional to 2,939.79, 4,056.88 and 1,820.50 is: 2,512.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.79 : 4,056.88 = 1,820.50 : x
  2. Step 2: Convert to fraction form
    2,939.79/4,056.88 = 1,820.50/x
  3. Step 3: Cross multiply
    2,939.79x = 4,056.88 × 1,820.50
  4. Step 4: Simplify right side
    2,939.79x = 7,385,550.04
  5. Step 5: Solve for x
    x = 7,385,550.04/2,939.79
  6. Step 6: Final answer
    x = 2,512.27

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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.