Home / 2,813.28-3,881.43-1,818.87

Finding the Fourth Proportional to 2,813.28, 3,881.43 and 1,818.87

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Solution

The fourth proportional to 2,813.28, 3,881.43 and 1,818.87 is: 2,509.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.28 : 3,881.43 = 1,818.87 : x
  2. Step 2: Convert to fraction form
    2,813.28/3,881.43 = 1,818.87/x
  3. Step 3: Cross multiply
    2,813.28x = 3,881.43 × 1,818.87
  4. Step 4: Simplify right side
    2,813.28x = 7,059,816.58
  5. Step 5: Solve for x
    x = 7,059,816.58/2,813.28
  6. Step 6: Final answer
    x = 2,509.46

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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.