Home / 2,285.16-3,153.78-2,108.76

Finding the Fourth Proportional to 2,285.16, 3,153.78 and 2,108.76

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Solution

The fourth proportional to 2,285.16, 3,153.78 and 2,108.76 is: 2,910.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.16 : 3,153.78 = 2,108.76 : x
  2. Step 2: Convert to fraction form
    2,285.16/3,153.78 = 2,108.76/x
  3. Step 3: Cross multiply
    2,285.16x = 3,153.78 × 2,108.76
  4. Step 4: Simplify right side
    2,285.16x = 6,650,565.11
  5. Step 5: Solve for x
    x = 6,650,565.11/2,285.16
  6. Step 6: Final answer
    x = 2,910.33

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Half scale
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Double scale
Find fourth proportional to 2,286.16, 3,155.16 and 2,109.76
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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.