Home / 7,021.21-9,689.25-4,037.62

Finding the Fourth Proportional to 7,021.21, 9,689.25 and 4,037.62

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Solution

The fourth proportional to 7,021.21, 9,689.25 and 4,037.62 is: 5,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.21 : 9,689.25 = 4,037.62 : x
  2. Step 2: Convert to fraction form
    7,021.21/9,689.25 = 4,037.62/x
  3. Step 3: Cross multiply
    7,021.21x = 9,689.25 × 4,037.62
  4. Step 4: Simplify right side
    7,021.21x = 39,121,461.14
  5. Step 5: Solve for x
    x = 39,121,461.14/7,021.21
  6. Step 6: Final answer
    x = 5,571.90

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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.