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Finding the Fourth Proportional to 2,867.92, 3,956.05 and 1,804

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Solution

The fourth proportional to 2,867.92, 3,956.05 and 1,804 is: 2,488.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.92 : 3,956.05 = 1,804 : x
  2. Step 2: Convert to fraction form
    2,867.92/3,956.05 = 1,804/x
  3. Step 3: Cross multiply
    2,867.92x = 3,956.05 × 1,804
  4. Step 4: Simplify right side
    2,867.92x = 7,136,714.20
  5. Step 5: Solve for x
    x = 7,136,714.20/2,867.92
  6. Step 6: Final answer
    x = 2,488.46

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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.