Home / 2,156.60-3,225.90-1,964.36

Finding the Fourth Proportional to 2,156.60, 3,225.90 and 1,964.36

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Solution

The fourth proportional to 2,156.60, 3,225.90 and 1,964.36 is: 2,938.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.60 : 3,225.90 = 1,964.36 : x
  2. Step 2: Convert to fraction form
    2,156.60/3,225.90 = 1,964.36/x
  3. Step 3: Cross multiply
    2,156.60x = 3,225.90 × 1,964.36
  4. Step 4: Simplify right side
    2,156.60x = 6,336,828.92
  5. Step 5: Solve for x
    x = 6,336,828.92/2,156.60
  6. Step 6: Final answer
    x = 2,938.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.