Home / 3,630.88-5,443.08-1,680.40

Finding the Fourth Proportional to 3,630.88, 5,443.08 and 1,680.40

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Solution

The fourth proportional to 3,630.88, 5,443.08 and 1,680.40 is: 2,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.88 : 5,443.08 = 1,680.40 : x
  2. Step 2: Convert to fraction form
    3,630.88/5,443.08 = 1,680.40/x
  3. Step 3: Cross multiply
    3,630.88x = 5,443.08 × 1,680.40
  4. Step 4: Simplify right side
    3,630.88x = 9,146,551.63
  5. Step 5: Solve for x
    x = 9,146,551.63/3,630.88
  6. Step 6: Final answer
    x = 2,519.10

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1.5x scale

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.