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Finding the Fourth Proportional to 5,403.87, 7,457.34 and 2,919.87

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Solution

The fourth proportional to 5,403.87, 7,457.34 and 2,919.87 is: 4,029.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.87 : 7,457.34 = 2,919.87 : x
  2. Step 2: Convert to fraction form
    5,403.87/7,457.34 = 2,919.87/x
  3. Step 3: Cross multiply
    5,403.87x = 7,457.34 × 2,919.87
  4. Step 4: Simplify right side
    5,403.87x = 21,774,474.30
  5. Step 5: Solve for x
    x = 21,774,474.30/5,403.87
  6. Step 6: Final answer
    x = 4,029.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.