Home / 1,724.28-2,586.83-491.71

Finding the Fourth Proportional to 1,724.28, 2,586.83 and 491.71

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Solution

The fourth proportional to 1,724.28, 2,586.83 and 491.71 is: 737.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.28 : 2,586.83 = 491.71 : x
  2. Step 2: Convert to fraction form
    1,724.28/2,586.83 = 491.71/x
  3. Step 3: Cross multiply
    1,724.28x = 2,586.83 × 491.71
  4. Step 4: Simplify right side
    1,724.28x = 1,271,961.25
  5. Step 5: Solve for x
    x = 1,271,961.25/1,724.28
  6. Step 6: Final answer
    x = 737.68

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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.