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Finding the Fourth Proportional to 1,864.12, 2,796.06 and 709.24

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Solution

The fourth proportional to 1,864.12, 2,796.06 and 709.24 is: 1,063.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.12 : 2,796.06 = 709.24 : x
  2. Step 2: Convert to fraction form
    1,864.12/2,796.06 = 709.24/x
  3. Step 3: Cross multiply
    1,864.12x = 2,796.06 × 709.24
  4. Step 4: Simplify right side
    1,864.12x = 1,983,077.59
  5. Step 5: Solve for x
    x = 1,983,077.59/1,864.12
  6. Step 6: Final answer
    x = 1,063.81

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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.