Home / 3,117.48-4,302.98-2,108.73

Finding the Fourth Proportional to 3,117.48, 4,302.98 and 2,108.73

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Solution

The fourth proportional to 3,117.48, 4,302.98 and 2,108.73 is: 2,910.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.48 : 4,302.98 = 2,108.73 : x
  2. Step 2: Convert to fraction form
    3,117.48/4,302.98 = 2,108.73/x
  3. Step 3: Cross multiply
    3,117.48x = 4,302.98 × 2,108.73
  4. Step 4: Simplify right side
    3,117.48x = 9,073,823.02
  5. Step 5: Solve for x
    x = 9,073,823.02/3,117.48
  6. Step 6: Final answer
    x = 2,910.63

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.