Home / 3,620.71-5,428.50-1,512.28

Finding the Fourth Proportional to 3,620.71, 5,428.50 and 1,512.28

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Solution

The fourth proportional to 3,620.71, 5,428.50 and 1,512.28 is: 2,267.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.71 : 5,428.50 = 1,512.28 : x
  2. Step 2: Convert to fraction form
    3,620.71/5,428.50 = 1,512.28/x
  3. Step 3: Cross multiply
    3,620.71x = 5,428.50 × 1,512.28
  4. Step 4: Simplify right side
    3,620.71x = 8,209,411.98
  5. Step 5: Solve for x
    x = 8,209,411.98/3,620.71
  6. Step 6: Final answer
    x = 2,267.35

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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.