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Finding the Fourth Proportional to 2,980.53, 4,475.79 and 2,668.68

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Solution

The fourth proportional to 2,980.53, 4,475.79 and 2,668.68 is: 4,007.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.53 : 4,475.79 = 2,668.68 : x
  2. Step 2: Convert to fraction form
    2,980.53/4,475.79 = 2,668.68/x
  3. Step 3: Cross multiply
    2,980.53x = 4,475.79 × 2,668.68
  4. Step 4: Simplify right side
    2,980.53x = 11,944,451.26
  5. Step 5: Solve for x
    x = 11,944,451.26/2,980.53
  6. Step 6: Final answer
    x = 4,007.49

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1.5x scale

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.