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Finding the Fourth Proportional to 2,010.72, 3,000.30 and 1,803

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Solution

The fourth proportional to 2,010.72, 3,000.30 and 1,803 is: 2,690.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,010.72 : 3,000.30 = 1,803 : x
  2. Step 2: Convert to fraction form
    2,010.72/3,000.30 = 1,803/x
  3. Step 3: Cross multiply
    2,010.72x = 3,000.30 × 1,803
  4. Step 4: Simplify right side
    2,010.72x = 5,409,540.90
  5. Step 5: Solve for x
    x = 5,409,540.90/2,010.72
  6. Step 6: Final answer
    x = 2,690.35

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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.