Home / 4,140.21-5,705.84-3,508.72

Finding the Fourth Proportional to 4,140.21, 5,705.84 and 3,508.72

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Solution

The fourth proportional to 4,140.21, 5,705.84 and 3,508.72 is: 4,835.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.21 : 5,705.84 = 3,508.72 : x
  2. Step 2: Convert to fraction form
    4,140.21/5,705.84 = 3,508.72/x
  3. Step 3: Cross multiply
    4,140.21x = 5,705.84 × 3,508.72
  4. Step 4: Simplify right side
    4,140.21x = 20,020,189.43
  5. Step 5: Solve for x
    x = 20,020,189.43/4,140.21
  6. Step 6: Final answer
    x = 4,835.54

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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.