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Finding the Fourth Proportional to 2,143, 2,955.72 and 1,480.96

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Solution

The fourth proportional to 2,143, 2,955.72 and 1,480.96 is: 2,042.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143 : 2,955.72 = 1,480.96 : x
  2. Step 2: Convert to fraction form
    2,143/2,955.72 = 1,480.96/x
  3. Step 3: Cross multiply
    2,143x = 2,955.72 × 1,480.96
  4. Step 4: Simplify right side
    2,143x = 4,377,303.09
  5. Step 5: Solve for x
    x = 4,377,303.09/2,143
  6. Step 6: Final answer
    x = 2,042.61

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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.