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Finding the Fourth Proportional to 1,804.79, 2,702.99 and 1,316.63

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Solution

The fourth proportional to 1,804.79, 2,702.99 and 1,316.63 is: 1,971.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,804.79 : 2,702.99 = 1,316.63 : x
  2. Step 2: Convert to fraction form
    1,804.79/2,702.99 = 1,316.63/x
  3. Step 3: Cross multiply
    1,804.79x = 2,702.99 × 1,316.63
  4. Step 4: Simplify right side
    1,804.79x = 3,558,827.50
  5. Step 5: Solve for x
    x = 3,558,827.50/1,804.79
  6. Step 6: Final answer
    x = 1,971.88

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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.