Home / 2,155.95-3,232.85-1,181.25

Finding the Fourth Proportional to 2,155.95, 3,232.85 and 1,181.25

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Solution

The fourth proportional to 2,155.95, 3,232.85 and 1,181.25 is: 1,771.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.95 : 3,232.85 = 1,181.25 : x
  2. Step 2: Convert to fraction form
    2,155.95/3,232.85 = 1,181.25/x
  3. Step 3: Cross multiply
    2,155.95x = 3,232.85 × 1,181.25
  4. Step 4: Simplify right side
    2,155.95x = 3,818,798.16
  5. Step 5: Solve for x
    x = 3,818,798.16/2,155.95
  6. Step 6: Final answer
    x = 1,771.28

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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.