Home / 7,173.30-9,899.13-3,986.58

Finding the Fourth Proportional to 7,173.30, 9,899.13 and 3,986.58

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Solution

The fourth proportional to 7,173.30, 9,899.13 and 3,986.58 is: 5,501.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.30 : 9,899.13 = 3,986.58 : x
  2. Step 2: Convert to fraction form
    7,173.30/9,899.13 = 3,986.58/x
  3. Step 3: Cross multiply
    7,173.30x = 9,899.13 × 3,986.58
  4. Step 4: Simplify right side
    7,173.30x = 39,463,673.68
  5. Step 5: Solve for x
    x = 39,463,673.68/7,173.30
  6. Step 6: Final answer
    x = 5,501.47

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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.