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Finding the Fourth Proportional to 8,670.72, 11,964.84 and 5,133.36

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Solution

The fourth proportional to 8,670.72, 11,964.84 and 5,133.36 is: 7,083.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.72 : 11,964.84 = 5,133.36 : x
  2. Step 2: Convert to fraction form
    8,670.72/11,964.84 = 5,133.36/x
  3. Step 3: Cross multiply
    8,670.72x = 11,964.84 × 5,133.36
  4. Step 4: Simplify right side
    8,670.72x = 61,419,831.06
  5. Step 5: Solve for x
    x = 61,419,831.06/8,670.72
  6. Step 6: Final answer
    x = 7,083.59

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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.