Home / 5,316.56-7,974.96-1,618.64

Finding the Fourth Proportional to 5,316.56, 7,974.96 and 1,618.64

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Solution

The fourth proportional to 5,316.56, 7,974.96 and 1,618.64 is: 2,428.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.56 : 7,974.96 = 1,618.64 : x
  2. Step 2: Convert to fraction form
    5,316.56/7,974.96 = 1,618.64/x
  3. Step 3: Cross multiply
    5,316.56x = 7,974.96 × 1,618.64
  4. Step 4: Simplify right side
    5,316.56x = 12,908,589.25
  5. Step 5: Solve for x
    x = 12,908,589.25/5,316.56
  6. Step 6: Final answer
    x = 2,428.00

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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.