Home / 7,111.12-10,666.92-2,180.32

Finding the Fourth Proportional to 7,111.12, 10,666.92 and 2,180.32

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Solution

The fourth proportional to 7,111.12, 10,666.92 and 2,180.32 is: 3,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.12 : 10,666.92 = 2,180.32 : x
  2. Step 2: Convert to fraction form
    7,111.12/10,666.92 = 2,180.32/x
  3. Step 3: Cross multiply
    7,111.12x = 10,666.92 × 2,180.32
  4. Step 4: Simplify right side
    7,111.12x = 23,257,299.01
  5. Step 5: Solve for x
    x = 23,257,299.01/7,111.12
  6. Step 6: Final answer
    x = 3,270.55

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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.