Home / 1,754.21-2,631.39-455.65

Finding the Fourth Proportional to 1,754.21, 2,631.39 and 455.65

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Solution

The fourth proportional to 1,754.21, 2,631.39 and 455.65 is: 683.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.21 : 2,631.39 = 455.65 : x
  2. Step 2: Convert to fraction form
    1,754.21/2,631.39 = 455.65/x
  3. Step 3: Cross multiply
    1,754.21x = 2,631.39 × 455.65
  4. Step 4: Simplify right side
    1,754.21x = 1,198,984.57
  5. Step 5: Solve for x
    x = 1,198,984.57/1,754.21
  6. Step 6: Final answer
    x = 683.49

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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.