Home / 2,939.65-4,056.93-1,943.20

Finding the Fourth Proportional to 2,939.65, 4,056.93 and 1,943.20

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Solution

The fourth proportional to 2,939.65, 4,056.93 and 1,943.20 is: 2,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.65 : 4,056.93 = 1,943.20 : x
  2. Step 2: Convert to fraction form
    2,939.65/4,056.93 = 1,943.20/x
  3. Step 3: Cross multiply
    2,939.65x = 4,056.93 × 1,943.20
  4. Step 4: Simplify right side
    2,939.65x = 7,883,426.38
  5. Step 5: Solve for x
    x = 7,883,426.38/2,939.65
  6. Step 6: Final answer
    x = 2,681.76

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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.