Home / 2,775.20-4,154.70-2,629.40

Finding the Fourth Proportional to 2,775.20, 4,154.70 and 2,629.40

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Solution

The fourth proportional to 2,775.20, 4,154.70 and 2,629.40 is: 3,936.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.20 : 4,154.70 = 2,629.40 : x
  2. Step 2: Convert to fraction form
    2,775.20/4,154.70 = 2,629.40/x
  3. Step 3: Cross multiply
    2,775.20x = 4,154.70 × 2,629.40
  4. Step 4: Simplify right side
    2,775.20x = 10,924,368.18
  5. Step 5: Solve for x
    x = 10,924,368.18/2,775.20
  6. Step 6: Final answer
    x = 3,936.43

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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.