Home / 1,861.40-2,569.92-1,467.20

Finding the Fourth Proportional to 1,861.40, 2,569.92 and 1,467.20

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Solution

The fourth proportional to 1,861.40, 2,569.92 and 1,467.20 is: 2,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.40 : 2,569.92 = 1,467.20 : x
  2. Step 2: Convert to fraction form
    1,861.40/2,569.92 = 1,467.20/x
  3. Step 3: Cross multiply
    1,861.40x = 2,569.92 × 1,467.20
  4. Step 4: Simplify right side
    1,861.40x = 3,770,586.62
  5. Step 5: Solve for x
    x = 3,770,586.62/1,861.40
  6. Step 6: Final answer
    x = 2,025.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.