Home / 2,642.10-3,966.12-1,668.75

Finding the Fourth Proportional to 2,642.10, 3,966.12 and 1,668.75

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Solution

The fourth proportional to 2,642.10, 3,966.12 and 1,668.75 is: 2,505.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.10 : 3,966.12 = 1,668.75 : x
  2. Step 2: Convert to fraction form
    2,642.10/3,966.12 = 1,668.75/x
  3. Step 3: Cross multiply
    2,642.10x = 3,966.12 × 1,668.75
  4. Step 4: Simplify right side
    2,642.10x = 6,618,462.75
  5. Step 5: Solve for x
    x = 6,618,462.75/2,642.10
  6. Step 6: Final answer
    x = 2,505.00

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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.