Home / 3,847.90-5,305.30-3,210.12

Finding the Fourth Proportional to 3,847.90, 5,305.30 and 3,210.12

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Solution

The fourth proportional to 3,847.90, 5,305.30 and 3,210.12 is: 4,425.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.90 : 5,305.30 = 3,210.12 : x
  2. Step 2: Convert to fraction form
    3,847.90/5,305.30 = 3,210.12/x
  3. Step 3: Cross multiply
    3,847.90x = 5,305.30 × 3,210.12
  4. Step 4: Simplify right side
    3,847.90x = 17,030,649.64
  5. Step 5: Solve for x
    x = 17,030,649.64/3,847.90
  6. Step 6: Final answer
    x = 4,425.96

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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.