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Finding the Fourth Proportional to 4,724.28, 7,089.75 and 3,810.87

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Solution

The fourth proportional to 4,724.28, 7,089.75 and 3,810.87 is: 5,718.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,724.28 : 7,089.75 = 3,810.87 : x
  2. Step 2: Convert to fraction form
    4,724.28/7,089.75 = 3,810.87/x
  3. Step 3: Cross multiply
    4,724.28x = 7,089.75 × 3,810.87
  4. Step 4: Simplify right side
    4,724.28x = 27,018,115.58
  5. Step 5: Solve for x
    x = 27,018,115.58/4,724.28
  6. Step 6: Final answer
    x = 5,718.99

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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.