Home / 4,871.20-6,720.96-2,775.28

Finding the Fourth Proportional to 4,871.20, 6,720.96 and 2,775.28

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Solution

The fourth proportional to 4,871.20, 6,720.96 and 2,775.28 is: 3,829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,871.20 : 6,720.96 = 2,775.28 : x
  2. Step 2: Convert to fraction form
    4,871.20/6,720.96 = 2,775.28/x
  3. Step 3: Cross multiply
    4,871.20x = 6,720.96 × 2,775.28
  4. Step 4: Simplify right side
    4,871.20x = 18,652,545.87
  5. Step 5: Solve for x
    x = 18,652,545.87/4,871.20
  6. Step 6: Final answer
    x = 3,829.15

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.