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Finding the Fourth Proportional to 8,754.35, 13,131.05 and 2,831.12

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Solution

The fourth proportional to 8,754.35, 13,131.05 and 2,831.12 is: 4,246.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.35 : 13,131.05 = 2,831.12 : x
  2. Step 2: Convert to fraction form
    8,754.35/13,131.05 = 2,831.12/x
  3. Step 3: Cross multiply
    8,754.35x = 13,131.05 × 2,831.12
  4. Step 4: Simplify right side
    8,754.35x = 37,175,547.71
  5. Step 5: Solve for x
    x = 37,175,547.71/8,754.35
  6. Step 6: Final answer
    x = 4,246.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.