Home / 7,447.21-11,171.19-1,900.60

Finding the Fourth Proportional to 7,447.21, 11,171.19 and 1,900.60

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Solution

The fourth proportional to 7,447.21, 11,171.19 and 1,900.60 is: 2,851.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.21 : 11,171.19 = 1,900.60 : x
  2. Step 2: Convert to fraction form
    7,447.21/11,171.19 = 1,900.60/x
  3. Step 3: Cross multiply
    7,447.21x = 11,171.19 × 1,900.60
  4. Step 4: Simplify right side
    7,447.21x = 21,231,963.71
  5. Step 5: Solve for x
    x = 21,231,963.71/7,447.21
  6. Step 6: Final answer
    x = 2,851.00

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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.