Home / 1,261.19-1,740.30-756.94

Finding the Fourth Proportional to 1,261.19, 1,740.30 and 756.94

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Solution

The fourth proportional to 1,261.19, 1,740.30 and 756.94 is: 1,044.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.19 : 1,740.30 = 756.94 : x
  2. Step 2: Convert to fraction form
    1,261.19/1,740.30 = 756.94/x
  3. Step 3: Cross multiply
    1,261.19x = 1,740.30 × 756.94
  4. Step 4: Simplify right side
    1,261.19x = 1,317,290.20
  5. Step 5: Solve for x
    x = 1,317,290.20/1,261.19
  6. Step 6: Final answer
    x = 1,044.49

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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.