Home / 4,989.96-7,485.78-1,871.04

Finding the Fourth Proportional to 4,989.96, 7,485.78 and 1,871.04

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Solution

The fourth proportional to 4,989.96, 7,485.78 and 1,871.04 is: 2,806.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.96 : 7,485.78 = 1,871.04 : x
  2. Step 2: Convert to fraction form
    4,989.96/7,485.78 = 1,871.04/x
  3. Step 3: Cross multiply
    4,989.96x = 7,485.78 × 1,871.04
  4. Step 4: Simplify right side
    4,989.96x = 14,006,193.81
  5. Step 5: Solve for x
    x = 14,006,193.81/4,989.96
  6. Step 6: Final answer
    x = 2,806.87

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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.