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Finding the Fourth Proportional to 8,121.16, 11,201 and 5,607.48

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Solution

The fourth proportional to 8,121.16, 11,201 and 5,607.48 is: 7,734.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.16 : 11,201 = 5,607.48 : x
  2. Step 2: Convert to fraction form
    8,121.16/11,201 = 5,607.48/x
  3. Step 3: Cross multiply
    8,121.16x = 11,201 × 5,607.48
  4. Step 4: Simplify right side
    8,121.16x = 62,809,383.48
  5. Step 5: Solve for x
    x = 62,809,383.48/8,121.16
  6. Step 6: Final answer
    x = 7,734.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.