Home / 2,145.27-2,961.05-1,261.35

Finding the Fourth Proportional to 2,145.27, 2,961.05 and 1,261.35

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Solution

The fourth proportional to 2,145.27, 2,961.05 and 1,261.35 is: 1,741.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.27 : 2,961.05 = 1,261.35 : x
  2. Step 2: Convert to fraction form
    2,145.27/2,961.05 = 1,261.35/x
  3. Step 3: Cross multiply
    2,145.27x = 2,961.05 × 1,261.35
  4. Step 4: Simplify right side
    2,145.27x = 3,734,914.11
  5. Step 5: Solve for x
    x = 3,734,914.11/2,145.27
  6. Step 6: Final answer
    x = 1,741.00

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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.