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Finding the Fourth Proportional to 5,158.04, 7,118.04 and 2,919.90

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Solution

The fourth proportional to 5,158.04, 7,118.04 and 2,919.90 is: 4,029.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.04 : 7,118.04 = 2,919.90 : x
  2. Step 2: Convert to fraction form
    5,158.04/7,118.04 = 2,919.90/x
  3. Step 3: Cross multiply
    5,158.04x = 7,118.04 × 2,919.90
  4. Step 4: Simplify right side
    5,158.04x = 20,783,965.00
  5. Step 5: Solve for x
    x = 20,783,965.00/5,158.04
  6. Step 6: Final answer
    x = 4,029.43

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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.