Home / 7,447.48-11,171.21-1,900.91

Finding the Fourth Proportional to 7,447.48, 11,171.21 and 1,900.91

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Solution

The fourth proportional to 7,447.48, 11,171.21 and 1,900.91 is: 2,851.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.48 : 11,171.21 = 1,900.91 : x
  2. Step 2: Convert to fraction form
    7,447.48/11,171.21 = 1,900.91/x
  3. Step 3: Cross multiply
    7,447.48x = 11,171.21 × 1,900.91
  4. Step 4: Simplify right side
    7,447.48x = 21,235,483.22
  5. Step 5: Solve for x
    x = 21,235,483.22/7,447.48
  6. Step 6: Final answer
    x = 2,851.37

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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.