Home / 1,851.16-2,778.24-756.28

Finding the Fourth Proportional to 1,851.16, 2,778.24 and 756.28

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Solution

The fourth proportional to 1,851.16, 2,778.24 and 756.28 is: 1,135.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.16 : 2,778.24 = 756.28 : x
  2. Step 2: Convert to fraction form
    1,851.16/2,778.24 = 756.28/x
  3. Step 3: Cross multiply
    1,851.16x = 2,778.24 × 756.28
  4. Step 4: Simplify right side
    1,851.16x = 2,101,127.35
  5. Step 5: Solve for x
    x = 2,101,127.35/1,851.16
  6. Step 6: Final answer
    x = 1,135.03

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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.