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Finding the Fourth Proportional to 6,671.80, 9,999.88 and 2,720.59

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Solution

The fourth proportional to 6,671.80, 9,999.88 and 2,720.59 is: 4,077.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.80 : 9,999.88 = 2,720.59 : x
  2. Step 2: Convert to fraction form
    6,671.80/9,999.88 = 2,720.59/x
  3. Step 3: Cross multiply
    6,671.80x = 9,999.88 × 2,720.59
  4. Step 4: Simplify right side
    6,671.80x = 27,205,549.38
  5. Step 5: Solve for x
    x = 27,205,549.38/6,671.80
  6. Step 6: Final answer
    x = 4,077.69

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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.