Home / 7,431.30-11,147.65-2,688.66

Finding the Fourth Proportional to 7,431.30, 11,147.65 and 2,688.66

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Solution

The fourth proportional to 7,431.30, 11,147.65 and 2,688.66 is: 4,033.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.30 : 11,147.65 = 2,688.66 : x
  2. Step 2: Convert to fraction form
    7,431.30/11,147.65 = 2,688.66/x
  3. Step 3: Cross multiply
    7,431.30x = 11,147.65 × 2,688.66
  4. Step 4: Simplify right side
    7,431.30x = 29,972,233.93
  5. Step 5: Solve for x
    x = 29,972,233.93/7,431.30
  6. Step 6: Final answer
    x = 4,033.24

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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.