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Finding the Fourth Proportional to 8,187.65, 11,296.36 and 4,831.62

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Solution

The fourth proportional to 8,187.65, 11,296.36 and 4,831.62 is: 6,666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.65 : 11,296.36 = 4,831.62 : x
  2. Step 2: Convert to fraction form
    8,187.65/11,296.36 = 4,831.62/x
  3. Step 3: Cross multiply
    8,187.65x = 11,296.36 × 4,831.62
  4. Step 4: Simplify right side
    8,187.65x = 54,579,682.58
  5. Step 5: Solve for x
    x = 54,579,682.58/8,187.65
  6. Step 6: Final answer
    x = 6,666.10

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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.