Home / 8,440.54-11,663.40-7,317.88

Finding the Fourth Proportional to 8,440.54, 11,663.40 and 7,317.88

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Solution

The fourth proportional to 8,440.54, 11,663.40 and 7,317.88 is: 10,112.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,440.54 : 11,663.40 = 7,317.88 : x
  2. Step 2: Convert to fraction form
    8,440.54/11,663.40 = 7,317.88/x
  3. Step 3: Cross multiply
    8,440.54x = 11,663.40 × 7,317.88
  4. Step 4: Simplify right side
    8,440.54x = 85,351,361.59
  5. Step 5: Solve for x
    x = 85,351,361.59/8,440.54
  6. Step 6: Final answer
    x = 10,112.07

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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.