Home / 7,405.43-11,108.07-2,140.56

Finding the Fourth Proportional to 7,405.43, 11,108.07 and 2,140.56

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Solution

The fourth proportional to 7,405.43, 11,108.07 and 2,140.56 is: 3,210.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.43 : 11,108.07 = 2,140.56 : x
  2. Step 2: Convert to fraction form
    7,405.43/11,108.07 = 2,140.56/x
  3. Step 3: Cross multiply
    7,405.43x = 11,108.07 × 2,140.56
  4. Step 4: Simplify right side
    7,405.43x = 23,777,490.32
  5. Step 5: Solve for x
    x = 23,777,490.32/7,405.43
  6. Step 6: Final answer
    x = 3,210.82

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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.