Home / 6,731.40-9,290.72-3,899.24

Finding the Fourth Proportional to 6,731.40, 9,290.72 and 3,899.24

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Solution

The fourth proportional to 6,731.40, 9,290.72 and 3,899.24 is: 5,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,731.40 : 9,290.72 = 3,899.24 : x
  2. Step 2: Convert to fraction form
    6,731.40/9,290.72 = 3,899.24/x
  3. Step 3: Cross multiply
    6,731.40x = 9,290.72 × 3,899.24
  4. Step 4: Simplify right side
    6,731.40x = 36,226,747.05
  5. Step 5: Solve for x
    x = 36,226,747.05/6,731.40
  6. Step 6: Final answer
    x = 5,381.76

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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.