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Finding the Fourth Proportional to 1,783.80, 2,461.75 and 997.85

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Solution

The fourth proportional to 1,783.80, 2,461.75 and 997.85 is: 1,377.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.80 : 2,461.75 = 997.85 : x
  2. Step 2: Convert to fraction form
    1,783.80/2,461.75 = 997.85/x
  3. Step 3: Cross multiply
    1,783.80x = 2,461.75 × 997.85
  4. Step 4: Simplify right side
    1,783.80x = 2,456,457.24
  5. Step 5: Solve for x
    x = 2,456,457.24/1,783.80
  6. Step 6: Final answer
    x = 1,377.09

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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.