Home / 1,714.85-2,568.68-1,421.65

Finding the Fourth Proportional to 1,714.85, 2,568.68 and 1,421.65

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Solution

The fourth proportional to 1,714.85, 2,568.68 and 1,421.65 is: 2,129.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,714.85 : 2,568.68 = 1,421.65 : x
  2. Step 2: Convert to fraction form
    1,714.85/2,568.68 = 1,421.65/x
  3. Step 3: Cross multiply
    1,714.85x = 2,568.68 × 1,421.65
  4. Step 4: Simplify right side
    1,714.85x = 3,651,765.36
  5. Step 5: Solve for x
    x = 3,651,765.36/1,714.85
  6. Step 6: Final answer
    x = 2,129.50

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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.