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Finding the Fourth Proportional to 4,000.10, 5,518.80 and 2,674.13

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Solution

The fourth proportional to 4,000.10, 5,518.80 and 2,674.13 is: 3,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.10 : 5,518.80 = 2,674.13 : x
  2. Step 2: Convert to fraction form
    4,000.10/5,518.80 = 2,674.13/x
  3. Step 3: Cross multiply
    4,000.10x = 5,518.80 × 2,674.13
  4. Step 4: Simplify right side
    4,000.10x = 14,757,961.05
  5. Step 5: Solve for x
    x = 14,757,961.05/4,000.10
  6. Step 6: Final answer
    x = 3,689.40

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Find fourth proportional to 2,000.05, 2,759.40 and 1,337.06
Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.