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Finding the Fourth Proportional to 2,991.70, 4,464.94 and 2,913.94

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Solution

The fourth proportional to 2,991.70, 4,464.94 and 2,913.94 is: 4,348.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.70 : 4,464.94 = 2,913.94 : x
  2. Step 2: Convert to fraction form
    2,991.70/4,464.94 = 2,913.94/x
  3. Step 3: Cross multiply
    2,991.70x = 4,464.94 × 2,913.94
  4. Step 4: Simplify right side
    2,991.70x = 13,010,562.83
  5. Step 5: Solve for x
    x = 13,010,562.83/2,991.70
  6. Step 6: Final answer
    x = 4,348.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.