Home / 2,816.55-3,887.94-2,521.31

Finding the Fourth Proportional to 2,816.55, 3,887.94 and 2,521.31

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Solution

The fourth proportional to 2,816.55, 3,887.94 and 2,521.31 is: 3,480.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.55 : 3,887.94 = 2,521.31 : x
  2. Step 2: Convert to fraction form
    2,816.55/3,887.94 = 2,521.31/x
  3. Step 3: Cross multiply
    2,816.55x = 3,887.94 × 2,521.31
  4. Step 4: Simplify right side
    2,816.55x = 9,802,682.56
  5. Step 5: Solve for x
    x = 9,802,682.56/2,816.55
  6. Step 6: Final answer
    x = 3,480.39

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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.