Home / 2,145.30-2,960.58-1,261.08

Finding the Fourth Proportional to 2,145.30, 2,960.58 and 1,261.08

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Solution

The fourth proportional to 2,145.30, 2,960.58 and 1,261.08 is: 1,740.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.30 : 2,960.58 = 1,261.08 : x
  2. Step 2: Convert to fraction form
    2,145.30/2,960.58 = 1,261.08/x
  3. Step 3: Cross multiply
    2,145.30x = 2,960.58 × 1,261.08
  4. Step 4: Simplify right side
    2,145.30x = 3,733,528.23
  5. Step 5: Solve for x
    x = 3,733,528.23/2,145.30
  6. Step 6: Final answer
    x = 1,740.33

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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.