Home / 7,173.12-9,898.77-3,986.43

Finding the Fourth Proportional to 7,173.12, 9,898.77 and 3,986.43

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Solution

The fourth proportional to 7,173.12, 9,898.77 and 3,986.43 is: 5,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.12 : 9,898.77 = 3,986.43 : x
  2. Step 2: Convert to fraction form
    7,173.12/9,898.77 = 3,986.43/x
  3. Step 3: Cross multiply
    7,173.12x = 9,898.77 × 3,986.43
  4. Step 4: Simplify right side
    7,173.12x = 39,460,753.69
  5. Step 5: Solve for x
    x = 39,460,753.69/7,173.12
  6. Step 6: Final answer
    x = 5,501.20

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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.