Home / 3,493.40-4,821.78-2,001.80

Finding the Fourth Proportional to 3,493.40, 4,821.78 and 2,001.80

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Solution

The fourth proportional to 3,493.40, 4,821.78 and 2,001.80 is: 2,762.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.40 : 4,821.78 = 2,001.80 : x
  2. Step 2: Convert to fraction form
    3,493.40/4,821.78 = 2,001.80/x
  3. Step 3: Cross multiply
    3,493.40x = 4,821.78 × 2,001.80
  4. Step 4: Simplify right side
    3,493.40x = 9,652,239.20
  5. Step 5: Solve for x
    x = 9,652,239.20/3,493.40
  6. Step 6: Final answer
    x = 2,762.99

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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.