Home / 1,261.27-1,740.44-730.04

Finding the Fourth Proportional to 1,261.27, 1,740.44 and 730.04

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Solution

The fourth proportional to 1,261.27, 1,740.44 and 730.04 is: 1,007.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.27 : 1,740.44 = 730.04 : x
  2. Step 2: Convert to fraction form
    1,261.27/1,740.44 = 730.04/x
  3. Step 3: Cross multiply
    1,261.27x = 1,740.44 × 730.04
  4. Step 4: Simplify right side
    1,261.27x = 1,270,596.99
  5. Step 5: Solve for x
    x = 1,270,596.99/1,261.27
  6. Step 6: Final answer
    x = 1,007.40

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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.