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Finding the Fourth Proportional to 4,321, 6,485.15 and 1,723.94

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Solution

The fourth proportional to 4,321, 6,485.15 and 1,723.94 is: 2,587.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,321 : 6,485.15 = 1,723.94 : x
  2. Step 2: Convert to fraction form
    4,321/6,485.15 = 1,723.94/x
  3. Step 3: Cross multiply
    4,321x = 6,485.15 × 1,723.94
  4. Step 4: Simplify right side
    4,321x = 11,180,009.49
  5. Step 5: Solve for x
    x = 11,180,009.49/4,321
  6. Step 6: Final answer
    x = 2,587.37

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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.