Home / 3,822.80-5,263.76-2,880

Finding the Fourth Proportional to 3,822.80, 5,263.76 and 2,880

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Solution

The fourth proportional to 3,822.80, 5,263.76 and 2,880 is: 3,965.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,822.80 : 5,263.76 = 2,880 : x
  2. Step 2: Convert to fraction form
    3,822.80/5,263.76 = 2,880/x
  3. Step 3: Cross multiply
    3,822.80x = 5,263.76 × 2,880
  4. Step 4: Simplify right side
    3,822.80x = 15,159,628.80
  5. Step 5: Solve for x
    x = 15,159,628.80/3,822.80
  6. Step 6: Final answer
    x = 3,965.58

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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.