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Finding the Fourth Proportional to 4,485.84, 6,724.66 and 1,888.96

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Solution

The fourth proportional to 4,485.84, 6,724.66 and 1,888.96 is: 2,831.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485.84 : 6,724.66 = 1,888.96 : x
  2. Step 2: Convert to fraction form
    4,485.84/6,724.66 = 1,888.96/x
  3. Step 3: Cross multiply
    4,485.84x = 6,724.66 × 1,888.96
  4. Step 4: Simplify right side
    4,485.84x = 12,702,613.75
  5. Step 5: Solve for x
    x = 12,702,613.75/4,485.84
  6. Step 6: Final answer
    x = 2,831.71

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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.