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Finding the Fourth Proportional to 4,000.40, 5,995.20 and 2,680.40

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Solution

The fourth proportional to 4,000.40, 5,995.20 and 2,680.40 is: 4,016.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.40 : 5,995.20 = 2,680.40 : x
  2. Step 2: Convert to fraction form
    4,000.40/5,995.20 = 2,680.40/x
  3. Step 3: Cross multiply
    4,000.40x = 5,995.20 × 2,680.40
  4. Step 4: Simplify right side
    4,000.40x = 16,069,534.08
  5. Step 5: Solve for x
    x = 16,069,534.08/4,000.40
  6. Step 6: Final answer
    x = 4,016.98

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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.