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Finding the Fourth Proportional to 2,804.63, 4,206.94 and 856.98

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Solution

The fourth proportional to 2,804.63, 4,206.94 and 856.98 is: 1,285.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,804.63 : 4,206.94 = 856.98 : x
  2. Step 2: Convert to fraction form
    2,804.63/4,206.94 = 856.98/x
  3. Step 3: Cross multiply
    2,804.63x = 4,206.94 × 856.98
  4. Step 4: Simplify right side
    2,804.63x = 3,605,261.30
  5. Step 5: Solve for x
    x = 3,605,261.30/2,804.63
  6. Step 6: Final answer
    x = 1,285.47

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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.