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Finding the Fourth Proportional to 2,913.70, 4,019.36 and 1,794.88

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Solution

The fourth proportional to 2,913.70, 4,019.36 and 1,794.88 is: 2,475.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.70 : 4,019.36 = 1,794.88 : x
  2. Step 2: Convert to fraction form
    2,913.70/4,019.36 = 1,794.88/x
  3. Step 3: Cross multiply
    2,913.70x = 4,019.36 × 1,794.88
  4. Step 4: Simplify right side
    2,913.70x = 7,214,268.88
  5. Step 5: Solve for x
    x = 7,214,268.88/2,913.70
  6. Step 6: Final answer
    x = 2,475.98

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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.