Home / 4,456.75-6,687.34-1,990.91

Finding the Fourth Proportional to 4,456.75, 6,687.34 and 1,990.91

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Solution

The fourth proportional to 4,456.75, 6,687.34 and 1,990.91 is: 2,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,456.75 : 6,687.34 = 1,990.91 : x
  2. Step 2: Convert to fraction form
    4,456.75/6,687.34 = 1,990.91/x
  3. Step 3: Cross multiply
    4,456.75x = 6,687.34 × 1,990.91
  4. Step 4: Simplify right side
    4,456.75x = 13,313,853.67
  5. Step 5: Solve for x
    x = 13,313,853.67/4,456.75
  6. Step 6: Final answer
    x = 2,987.35

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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.