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Finding the Fourth Proportional to 4,991.64, 7,487.46 and 1,914.36

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Solution

The fourth proportional to 4,991.64, 7,487.46 and 1,914.36 is: 2,871.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.64 : 7,487.46 = 1,914.36 : x
  2. Step 2: Convert to fraction form
    4,991.64/7,487.46 = 1,914.36/x
  3. Step 3: Cross multiply
    4,991.64x = 7,487.46 × 1,914.36
  4. Step 4: Simplify right side
    4,991.64x = 14,333,693.93
  5. Step 5: Solve for x
    x = 14,333,693.93/4,991.64
  6. Step 6: Final answer
    x = 2,871.54

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1.5x scale

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.