Home / 3,980.24-5,969.10-1,447.01

Finding the Fourth Proportional to 3,980.24, 5,969.10 and 1,447.01

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Solution

The fourth proportional to 3,980.24, 5,969.10 and 1,447.01 is: 2,170.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.24 : 5,969.10 = 1,447.01 : x
  2. Step 2: Convert to fraction form
    3,980.24/5,969.10 = 1,447.01/x
  3. Step 3: Cross multiply
    3,980.24x = 5,969.10 × 1,447.01
  4. Step 4: Simplify right side
    3,980.24x = 8,637,317.55
  5. Step 5: Solve for x
    x = 8,637,317.55/3,980.24
  6. Step 6: Final answer
    x = 2,170.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.