Home / 2,145.74-2,961.08-1,261.62

Finding the Fourth Proportional to 2,145.74, 2,961.08 and 1,261.62

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Solution

The fourth proportional to 2,145.74, 2,961.08 and 1,261.62 is: 1,741.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.74 : 2,961.08 = 1,261.62 : x
  2. Step 2: Convert to fraction form
    2,145.74/2,961.08 = 1,261.62/x
  3. Step 3: Cross multiply
    2,145.74x = 2,961.08 × 1,261.62
  4. Step 4: Simplify right side
    2,145.74x = 3,735,757.75
  5. Step 5: Solve for x
    x = 3,735,757.75/2,145.74
  6. Step 6: Final answer
    x = 1,741.01

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1.5x scale

Why These Related Problems?

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