Home / 7,043.67-9,720.57-3,899.86

Finding the Fourth Proportional to 7,043.67, 9,720.57 and 3,899.86

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Solution

The fourth proportional to 7,043.67, 9,720.57 and 3,899.86 is: 5,381.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,043.67 : 9,720.57 = 3,899.86 : x
  2. Step 2: Convert to fraction form
    7,043.67/9,720.57 = 3,899.86/x
  3. Step 3: Cross multiply
    7,043.67x = 9,720.57 × 3,899.86
  4. Step 4: Simplify right side
    7,043.67x = 37,908,859.70
  5. Step 5: Solve for x
    x = 37,908,859.70/7,043.67
  6. Step 6: Final answer
    x = 5,381.97

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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.