Home / 2,771.48-4,155.83-921.95

Finding the Fourth Proportional to 2,771.48, 4,155.83 and 921.95

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Solution

The fourth proportional to 2,771.48, 4,155.83 and 921.95 is: 1,382.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.48 : 4,155.83 = 921.95 : x
  2. Step 2: Convert to fraction form
    2,771.48/4,155.83 = 921.95/x
  3. Step 3: Cross multiply
    2,771.48x = 4,155.83 × 921.95
  4. Step 4: Simplify right side
    2,771.48x = 3,831,442.08
  5. Step 5: Solve for x
    x = 3,831,442.08/2,771.48
  6. Step 6: Final answer
    x = 1,382.46

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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.