Home / 1,727.20-2,591.84-631.66

Finding the Fourth Proportional to 1,727.20, 2,591.84 and 631.66

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Solution

The fourth proportional to 1,727.20, 2,591.84 and 631.66 is: 947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.20 : 2,591.84 = 631.66 : x
  2. Step 2: Convert to fraction form
    1,727.20/2,591.84 = 631.66/x
  3. Step 3: Cross multiply
    1,727.20x = 2,591.84 × 631.66
  4. Step 4: Simplify right side
    1,727.20x = 1,637,161.65
  5. Step 5: Solve for x
    x = 1,637,161.65/1,727.20
  6. Step 6: Final answer
    x = 947.87

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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.