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Finding the Fourth Proportional to 1,803.74, 2,702.64 and 1,072.40

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Solution

The fourth proportional to 1,803.74, 2,702.64 and 1,072.40 is: 1,606.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.74 : 2,702.64 = 1,072.40 : x
  2. Step 2: Convert to fraction form
    1,803.74/2,702.64 = 1,072.40/x
  3. Step 3: Cross multiply
    1,803.74x = 2,702.64 × 1,072.40
  4. Step 4: Simplify right side
    1,803.74x = 2,898,311.14
  5. Step 5: Solve for x
    x = 2,898,311.14/1,803.74
  6. Step 6: Final answer
    x = 1,606.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.