Home / 2,810.51-4,215.64-961.79

Finding the Fourth Proportional to 2,810.51, 4,215.64 and 961.79

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Solution

The fourth proportional to 2,810.51, 4,215.64 and 961.79 is: 1,442.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.51 : 4,215.64 = 961.79 : x
  2. Step 2: Convert to fraction form
    2,810.51/4,215.64 = 961.79/x
  3. Step 3: Cross multiply
    2,810.51x = 4,215.64 × 961.79
  4. Step 4: Simplify right side
    2,810.51x = 4,054,560.40
  5. Step 5: Solve for x
    x = 4,054,560.40/2,810.51
  6. Step 6: Final answer
    x = 1,442.64

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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.