Home / 4,428.40-6,639.52-1,961.88

Finding the Fourth Proportional to 4,428.40, 6,639.52 and 1,961.88

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Solution

The fourth proportional to 4,428.40, 6,639.52 and 1,961.88 is: 2,941.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,428.40 : 6,639.52 = 1,961.88 : x
  2. Step 2: Convert to fraction form
    4,428.40/6,639.52 = 1,961.88/x
  3. Step 3: Cross multiply
    4,428.40x = 6,639.52 × 1,961.88
  4. Step 4: Simplify right side
    4,428.40x = 13,025,941.50
  5. Step 5: Solve for x
    x = 13,025,941.50/4,428.40
  6. Step 6: Final answer
    x = 2,941.46

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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.