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Finding the Fourth Proportional to 4,991.67, 7,485.32 and 1,869.48

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Solution

The fourth proportional to 4,991.67, 7,485.32 and 1,869.48 is: 2,803.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.67 : 7,485.32 = 1,869.48 : x
  2. Step 2: Convert to fraction form
    4,991.67/7,485.32 = 1,869.48/x
  3. Step 3: Cross multiply
    4,991.67x = 7,485.32 × 1,869.48
  4. Step 4: Simplify right side
    4,991.67x = 13,993,674.76
  5. Step 5: Solve for x
    x = 13,993,674.76/4,991.67
  6. Step 6: Final answer
    x = 2,803.41

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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.