Home / 2,816.52-3,887.82-2,291.64

Finding the Fourth Proportional to 2,816.52, 3,887.82 and 2,291.64

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Solution

The fourth proportional to 2,816.52, 3,887.82 and 2,291.64 is: 3,163.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.52 : 3,887.82 = 2,291.64 : x
  2. Step 2: Convert to fraction form
    2,816.52/3,887.82 = 2,291.64/x
  3. Step 3: Cross multiply
    2,816.52x = 3,887.82 × 2,291.64
  4. Step 4: Simplify right side
    2,816.52x = 8,909,483.82
  5. Step 5: Solve for x
    x = 8,909,483.82/2,816.52
  6. Step 6: Final answer
    x = 3,163.30

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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.