Home / 7,911.18-11,868.22-2,645.68

Finding the Fourth Proportional to 7,911.18, 11,868.22 and 2,645.68

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Solution

The fourth proportional to 7,911.18, 11,868.22 and 2,645.68 is: 3,969.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.18 : 11,868.22 = 2,645.68 : x
  2. Step 2: Convert to fraction form
    7,911.18/11,868.22 = 2,645.68/x
  3. Step 3: Cross multiply
    7,911.18x = 11,868.22 × 2,645.68
  4. Step 4: Simplify right side
    7,911.18x = 31,399,512.29
  5. Step 5: Solve for x
    x = 31,399,512.29/7,911.18
  6. Step 6: Final answer
    x = 3,969.00

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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.