Home / 2,866.46-3,956.40-1,671.20

Finding the Fourth Proportional to 2,866.46, 3,956.40 and 1,671.20

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Solution

The fourth proportional to 2,866.46, 3,956.40 and 1,671.20 is: 2,306.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.46 : 3,956.40 = 1,671.20 : x
  2. Step 2: Convert to fraction form
    2,866.46/3,956.40 = 1,671.20/x
  3. Step 3: Cross multiply
    2,866.46x = 3,956.40 × 1,671.20
  4. Step 4: Simplify right side
    2,866.46x = 6,611,935.68
  5. Step 5: Solve for x
    x = 6,611,935.68/2,866.46
  6. Step 6: Final answer
    x = 2,306.66

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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.