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Finding the Fourth Proportional to 5,287.66, 7,929.87 and 4,539.94

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Solution

The fourth proportional to 5,287.66, 7,929.87 and 4,539.94 is: 6,808.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.66 : 7,929.87 = 4,539.94 : x
  2. Step 2: Convert to fraction form
    5,287.66/7,929.87 = 4,539.94/x
  3. Step 3: Cross multiply
    5,287.66x = 7,929.87 × 4,539.94
  4. Step 4: Simplify right side
    5,287.66x = 36,001,134.01
  5. Step 5: Solve for x
    x = 36,001,134.01/5,287.66
  6. Step 6: Final answer
    x = 6,808.52

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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.