Home / 3,708.10-5,115.72-2,381.60

Finding the Fourth Proportional to 3,708.10, 5,115.72 and 2,381.60

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Solution

The fourth proportional to 3,708.10, 5,115.72 and 2,381.60 is: 3,285.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.10 : 5,115.72 = 2,381.60 : x
  2. Step 2: Convert to fraction form
    3,708.10/5,115.72 = 2,381.60/x
  3. Step 3: Cross multiply
    3,708.10x = 5,115.72 × 2,381.60
  4. Step 4: Simplify right side
    3,708.10x = 12,183,598.75
  5. Step 5: Solve for x
    x = 12,183,598.75/3,708.10
  6. Step 6: Final answer
    x = 3,285.67

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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.