Home / 2,869.40-3,955.56-1,819.64

Finding the Fourth Proportional to 2,869.40, 3,955.56 and 1,819.64

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Solution

The fourth proportional to 2,869.40, 3,955.56 and 1,819.64 is: 2,508.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.40 : 3,955.56 = 1,819.64 : x
  2. Step 2: Convert to fraction form
    2,869.40/3,955.56 = 1,819.64/x
  3. Step 3: Cross multiply
    2,869.40x = 3,955.56 × 1,819.64
  4. Step 4: Simplify right side
    2,869.40x = 7,197,695.20
  5. Step 5: Solve for x
    x = 7,197,695.20/2,869.40
  6. Step 6: Final answer
    x = 2,508.43

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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.