Home / 3,240.90-4,861.11-1,160.51

Finding the Fourth Proportional to 3,240.90, 4,861.11 and 1,160.51

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Solution

The fourth proportional to 3,240.90, 4,861.11 and 1,160.51 is: 1,740.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.90 : 4,861.11 = 1,160.51 : x
  2. Step 2: Convert to fraction form
    3,240.90/4,861.11 = 1,160.51/x
  3. Step 3: Cross multiply
    3,240.90x = 4,861.11 × 1,160.51
  4. Step 4: Simplify right side
    3,240.90x = 5,641,342.46
  5. Step 5: Solve for x
    x = 5,641,342.46/3,240.90
  6. Step 6: Final answer
    x = 1,740.67

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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.