Home / 3,782.90-5,220.40-2,210.68

Finding the Fourth Proportional to 3,782.90, 5,220.40 and 2,210.68

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Solution

The fourth proportional to 3,782.90, 5,220.40 and 2,210.68 is: 3,050.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,782.90 : 5,220.40 = 2,210.68 : x
  2. Step 2: Convert to fraction form
    3,782.90/5,220.40 = 2,210.68/x
  3. Step 3: Cross multiply
    3,782.90x = 5,220.40 × 2,210.68
  4. Step 4: Simplify right side
    3,782.90x = 11,540,633.87
  5. Step 5: Solve for x
    x = 11,540,633.87/3,782.90
  6. Step 6: Final answer
    x = 3,050.74

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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.