Home / 8,945.82-12,342.36-5,168.49

Finding the Fourth Proportional to 8,945.82, 12,342.36 and 5,168.49

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Solution

The fourth proportional to 8,945.82, 12,342.36 and 5,168.49 is: 7,130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.82 : 12,342.36 = 5,168.49 : x
  2. Step 2: Convert to fraction form
    8,945.82/12,342.36 = 5,168.49/x
  3. Step 3: Cross multiply
    8,945.82x = 12,342.36 × 5,168.49
  4. Step 4: Simplify right side
    8,945.82x = 63,791,364.24
  5. Step 5: Solve for x
    x = 63,791,364.24/8,945.82
  6. Step 6: Final answer
    x = 7,130.86

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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.