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Finding the Fourth Proportional to 5,281.36, 7,923.30 and 1,818.64

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Solution

The fourth proportional to 5,281.36, 7,923.30 and 1,818.64 is: 2,728.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.36 : 7,923.30 = 1,818.64 : x
  2. Step 2: Convert to fraction form
    5,281.36/7,923.30 = 1,818.64/x
  3. Step 3: Cross multiply
    5,281.36x = 7,923.30 × 1,818.64
  4. Step 4: Simplify right side
    5,281.36x = 14,409,630.31
  5. Step 5: Solve for x
    x = 14,409,630.31/5,281.36
  6. Step 6: Final answer
    x = 2,728.39

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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.