Home / 2,772.40-4,154.96-1,127.02

Finding the Fourth Proportional to 2,772.40, 4,154.96 and 1,127.02

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Solution

The fourth proportional to 2,772.40, 4,154.96 and 1,127.02 is: 1,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.40 : 4,154.96 = 1,127.02 : x
  2. Step 2: Convert to fraction form
    2,772.40/4,154.96 = 1,127.02/x
  3. Step 3: Cross multiply
    2,772.40x = 4,154.96 × 1,127.02
  4. Step 4: Simplify right side
    2,772.40x = 4,682,723.02
  5. Step 5: Solve for x
    x = 4,682,723.02/2,772.40
  6. Step 6: Final answer
    x = 1,689.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.