Home / 5,379.17-7,421.49-3,140.73

Finding the Fourth Proportional to 5,379.17, 7,421.49 and 3,140.73

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Solution

The fourth proportional to 5,379.17, 7,421.49 and 3,140.73 is: 4,333.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.17 : 7,421.49 = 3,140.73 : x
  2. Step 2: Convert to fraction form
    5,379.17/7,421.49 = 3,140.73/x
  3. Step 3: Cross multiply
    5,379.17x = 7,421.49 × 3,140.73
  4. Step 4: Simplify right side
    5,379.17x = 23,308,896.29
  5. Step 5: Solve for x
    x = 23,308,896.29/5,379.17
  6. Step 6: Final answer
    x = 4,333.18

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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.