Home / 7,675.54-11,512.16-2,128.30

Finding the Fourth Proportional to 7,675.54, 11,512.16 and 2,128.30

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Solution

The fourth proportional to 7,675.54, 11,512.16 and 2,128.30 is: 3,192.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,675.54 : 11,512.16 = 2,128.30 : x
  2. Step 2: Convert to fraction form
    7,675.54/11,512.16 = 2,128.30/x
  3. Step 3: Cross multiply
    7,675.54x = 11,512.16 × 2,128.30
  4. Step 4: Simplify right side
    7,675.54x = 24,501,330.13
  5. Step 5: Solve for x
    x = 24,501,330.13/7,675.54
  6. Step 6: Final answer
    x = 3,192.13

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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.