Home / 3,628.32-5,442.48-1,680

Finding the Fourth Proportional to 3,628.32, 5,442.48 and 1,680

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Solution

The fourth proportional to 3,628.32, 5,442.48 and 1,680 is: 2,520.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.32 : 5,442.48 = 1,680 : x
  2. Step 2: Convert to fraction form
    3,628.32/5,442.48 = 1,680/x
  3. Step 3: Cross multiply
    3,628.32x = 5,442.48 × 1,680
  4. Step 4: Simplify right side
    3,628.32x = 9,143,366.40
  5. Step 5: Solve for x
    x = 9,143,366.40/3,628.32
  6. Step 6: Final answer
    x = 2,520.00

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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.