Home / 8,129.54-11,215.36-5,472.34

Finding the Fourth Proportional to 8,129.54, 11,215.36 and 5,472.34

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Solution

The fourth proportional to 8,129.54, 11,215.36 and 5,472.34 is: 7,549.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.54 : 11,215.36 = 5,472.34 : x
  2. Step 2: Convert to fraction form
    8,129.54/11,215.36 = 5,472.34/x
  3. Step 3: Cross multiply
    8,129.54x = 11,215.36 × 5,472.34
  4. Step 4: Simplify right side
    8,129.54x = 61,374,263.14
  5. Step 5: Solve for x
    x = 61,374,263.14/8,129.54
  6. Step 6: Final answer
    x = 7,549.54

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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.