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Finding the Fourth Proportional to 5,579.79, 8,374.29 and 2,807.25

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Solution

The fourth proportional to 5,579.79, 8,374.29 and 2,807.25 is: 4,213.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,579.79 : 8,374.29 = 2,807.25 : x
  2. Step 2: Convert to fraction form
    5,579.79/8,374.29 = 2,807.25/x
  3. Step 3: Cross multiply
    5,579.79x = 8,374.29 × 2,807.25
  4. Step 4: Simplify right side
    5,579.79x = 23,508,725.60
  5. Step 5: Solve for x
    x = 23,508,725.60/5,579.79
  6. Step 6: Final answer
    x = 4,213.19

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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.