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Finding the Fourth Proportional to 8,332.70, 12,499.70 and 2,786.07

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Solution

The fourth proportional to 8,332.70, 12,499.70 and 2,786.07 is: 4,179.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,332.70 : 12,499.70 = 2,786.07 : x
  2. Step 2: Convert to fraction form
    8,332.70/12,499.70 = 2,786.07/x
  3. Step 3: Cross multiply
    8,332.70x = 12,499.70 × 2,786.07
  4. Step 4: Simplify right side
    8,332.70x = 34,825,001.81
  5. Step 5: Solve for x
    x = 34,825,001.81/8,332.70
  6. Step 6: Final answer
    x = 4,179.32

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1.5x scale

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.