Home / 1,724.21-2,586.30-425.67

Finding the Fourth Proportional to 1,724.21, 2,586.30 and 425.67

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Solution

The fourth proportional to 1,724.21, 2,586.30 and 425.67 is: 638.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.21 : 2,586.30 = 425.67 : x
  2. Step 2: Convert to fraction form
    1,724.21/2,586.30 = 425.67/x
  3. Step 3: Cross multiply
    1,724.21x = 2,586.30 × 425.67
  4. Step 4: Simplify right side
    1,724.21x = 1,100,910.32
  5. Step 5: Solve for x
    x = 1,100,910.32/1,724.21
  6. Step 6: Final answer
    x = 638.50

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Double scale
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Similar ratio
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1.5x scale

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.