Home / 8,391.30-12,586.69-3,457.18

Finding the Fourth Proportional to 8,391.30, 12,586.69 and 3,457.18

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Solution

The fourth proportional to 8,391.30, 12,586.69 and 3,457.18 is: 5,185.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.30 : 12,586.69 = 3,457.18 : x
  2. Step 2: Convert to fraction form
    8,391.30/12,586.69 = 3,457.18/x
  3. Step 3: Cross multiply
    8,391.30x = 12,586.69 × 3,457.18
  4. Step 4: Simplify right side
    8,391.30x = 43,514,472.99
  5. Step 5: Solve for x
    x = 43,514,472.99/8,391.30
  6. Step 6: Final answer
    x = 5,185.67

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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.