Home / 5,081.13-7,621.70-1,618.38

Finding the Fourth Proportional to 5,081.13, 7,621.70 and 1,618.38

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Solution

The fourth proportional to 5,081.13, 7,621.70 and 1,618.38 is: 2,427.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,081.13 : 7,621.70 = 1,618.38 : x
  2. Step 2: Convert to fraction form
    5,081.13/7,621.70 = 1,618.38/x
  3. Step 3: Cross multiply
    5,081.13x = 7,621.70 × 1,618.38
  4. Step 4: Simplify right side
    5,081.13x = 12,334,798.75
  5. Step 5: Solve for x
    x = 12,334,798.75/5,081.13
  6. Step 6: Final answer
    x = 2,427.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.