Home / 1,261.24-1,740.58-730.12

Finding the Fourth Proportional to 1,261.24, 1,740.58 and 730.12

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Solution

The fourth proportional to 1,261.24, 1,740.58 and 730.12 is: 1,007.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.24 : 1,740.58 = 730.12 : x
  2. Step 2: Convert to fraction form
    1,261.24/1,740.58 = 730.12/x
  3. Step 3: Cross multiply
    1,261.24x = 1,740.58 × 730.12
  4. Step 4: Simplify right side
    1,261.24x = 1,270,832.27
  5. Step 5: Solve for x
    x = 1,270,832.27/1,261.24
  6. Step 6: Final answer
    x = 1,007.61

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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.