Home / 1,682.85-2,514.61-1,285.35

Finding the Fourth Proportional to 1,682.85, 2,514.61 and 1,285.35

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Solution

The fourth proportional to 1,682.85, 2,514.61 and 1,285.35 is: 1,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.85 : 2,514.61 = 1,285.35 : x
  2. Step 2: Convert to fraction form
    1,682.85/2,514.61 = 1,285.35/x
  3. Step 3: Cross multiply
    1,682.85x = 2,514.61 × 1,285.35
  4. Step 4: Simplify right side
    1,682.85x = 3,232,153.96
  5. Step 5: Solve for x
    x = 3,232,153.96/1,682.85
  6. Step 6: Final answer
    x = 1,920.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.