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Finding the Fourth Proportional to 5,281.88, 7,923.54 and 2,816.60

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Solution

The fourth proportional to 5,281.88, 7,923.54 and 2,816.60 is: 4,225.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.88 : 7,923.54 = 2,816.60 : x
  2. Step 2: Convert to fraction form
    5,281.88/7,923.54 = 2,816.60/x
  3. Step 3: Cross multiply
    5,281.88x = 7,923.54 × 2,816.60
  4. Step 4: Simplify right side
    5,281.88x = 22,317,442.76
  5. Step 5: Solve for x
    x = 22,317,442.76/5,281.88
  6. Step 6: Final answer
    x = 4,225.28

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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.