Home / 2,613.99-3,921.01-666.19

Finding the Fourth Proportional to 2,613.99, 3,921.01 and 666.19

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Solution

The fourth proportional to 2,613.99, 3,921.01 and 666.19 is: 999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.99 : 3,921.01 = 666.19 : x
  2. Step 2: Convert to fraction form
    2,613.99/3,921.01 = 666.19/x
  3. Step 3: Cross multiply
    2,613.99x = 3,921.01 × 666.19
  4. Step 4: Simplify right side
    2,613.99x = 2,612,134.32
  5. Step 5: Solve for x
    x = 2,612,134.32/2,613.99
  6. Step 6: Final answer
    x = 999.29

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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.