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Finding the Fourth Proportional to 1,877.76, 2,804.06 and 1,769.76

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Solution

The fourth proportional to 1,877.76, 2,804.06 and 1,769.76 is: 2,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.76 : 2,804.06 = 1,769.76 : x
  2. Step 2: Convert to fraction form
    1,877.76/2,804.06 = 1,769.76/x
  3. Step 3: Cross multiply
    1,877.76x = 2,804.06 × 1,769.76
  4. Step 4: Simplify right side
    1,877.76x = 4,962,504.38
  5. Step 5: Solve for x
    x = 4,962,504.38/1,877.76
  6. Step 6: Final answer
    x = 2,642.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.