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Finding the Fourth Proportional to 8,783.70, 13,171.50 and 2,859.66

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Solution

The fourth proportional to 8,783.70, 13,171.50 and 2,859.66 is: 4,288.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.70 : 13,171.50 = 2,859.66 : x
  2. Step 2: Convert to fraction form
    8,783.70/13,171.50 = 2,859.66/x
  3. Step 3: Cross multiply
    8,783.70x = 13,171.50 × 2,859.66
  4. Step 4: Simplify right side
    8,783.70x = 37,666,011.69
  5. Step 5: Solve for x
    x = 37,666,011.69/8,783.70
  6. Step 6: Final answer
    x = 4,288.17

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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.