Home / 1,864.43-2,796.66-631.85

Finding the Fourth Proportional to 1,864.43, 2,796.66 and 631.85

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Solution

The fourth proportional to 1,864.43, 2,796.66 and 631.85 is: 947.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.43 : 2,796.66 = 631.85 : x
  2. Step 2: Convert to fraction form
    1,864.43/2,796.66 = 631.85/x
  3. Step 3: Cross multiply
    1,864.43x = 2,796.66 × 631.85
  4. Step 4: Simplify right side
    1,864.43x = 1,767,055.64
  5. Step 5: Solve for x
    x = 1,767,055.64/1,864.43
  6. Step 6: Final answer
    x = 947.78

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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.