Home / 1,724.35-2,586.25-628.72

Finding the Fourth Proportional to 1,724.35, 2,586.25 and 628.72

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Solution

The fourth proportional to 1,724.35, 2,586.25 and 628.72 is: 942.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.35 : 2,586.25 = 628.72 : x
  2. Step 2: Convert to fraction form
    1,724.35/2,586.25 = 628.72/x
  3. Step 3: Cross multiply
    1,724.35x = 2,586.25 × 628.72
  4. Step 4: Simplify right side
    1,724.35x = 1,626,041.37
  5. Step 5: Solve for x
    x = 1,626,041.37/1,724.35
  6. Step 6: Final answer
    x = 942.99

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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.