Home / 5,181.13-7,147.31-3,389.65

Finding the Fourth Proportional to 5,181.13, 7,147.31 and 3,389.65

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Solution

The fourth proportional to 5,181.13, 7,147.31 and 3,389.65 is: 4,675.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.13 : 7,147.31 = 3,389.65 : x
  2. Step 2: Convert to fraction form
    5,181.13/7,147.31 = 3,389.65/x
  3. Step 3: Cross multiply
    5,181.13x = 7,147.31 × 3,389.65
  4. Step 4: Simplify right side
    5,181.13x = 24,226,844.52
  5. Step 5: Solve for x
    x = 24,226,844.52/5,181.13
  6. Step 6: Final answer
    x = 4,675.98

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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.