Home / 3,520.79-4,859.64-2,193.69

Finding the Fourth Proportional to 3,520.79, 4,859.64 and 2,193.69

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Solution

The fourth proportional to 3,520.79, 4,859.64 and 2,193.69 is: 3,027.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.79 : 4,859.64 = 2,193.69 : x
  2. Step 2: Convert to fraction form
    3,520.79/4,859.64 = 2,193.69/x
  3. Step 3: Cross multiply
    3,520.79x = 4,859.64 × 2,193.69
  4. Step 4: Simplify right side
    3,520.79x = 10,660,543.67
  5. Step 5: Solve for x
    x = 10,660,543.67/3,520.79
  6. Step 6: Final answer
    x = 3,027.89

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Half scale
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Double scale
Find fourth proportional to 3,521.79, 4,861.02 and 2,194.69
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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.