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Finding the Fourth Proportional to 4,814, 6,643.32 and 2,718.64

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Solution

The fourth proportional to 4,814, 6,643.32 and 2,718.64 is: 3,751.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,814 : 6,643.32 = 2,718.64 : x
  2. Step 2: Convert to fraction form
    4,814/6,643.32 = 2,718.64/x
  3. Step 3: Cross multiply
    4,814x = 6,643.32 × 2,718.64
  4. Step 4: Simplify right side
    4,814x = 18,060,795.48
  5. Step 5: Solve for x
    x = 18,060,795.48/4,814
  6. Step 6: Final answer
    x = 3,751.72

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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.