Home / 2,705.13-4,057.16-756.81

Finding the Fourth Proportional to 2,705.13, 4,057.16 and 756.81

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Solution

The fourth proportional to 2,705.13, 4,057.16 and 756.81 is: 1,135.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.13 : 4,057.16 = 756.81 : x
  2. Step 2: Convert to fraction form
    2,705.13/4,057.16 = 756.81/x
  3. Step 3: Cross multiply
    2,705.13x = 4,057.16 × 756.81
  4. Step 4: Simplify right side
    2,705.13x = 3,070,495.48
  5. Step 5: Solve for x
    x = 3,070,495.48/2,705.13
  6. Step 6: Final answer
    x = 1,135.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.