Home / 7,709.85-10,639.58-4,173.05

Finding the Fourth Proportional to 7,709.85, 10,639.58 and 4,173.05

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Solution

The fourth proportional to 7,709.85, 10,639.58 and 4,173.05 is: 5,758.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.85 : 10,639.58 = 4,173.05 : x
  2. Step 2: Convert to fraction form
    7,709.85/10,639.58 = 4,173.05/x
  3. Step 3: Cross multiply
    7,709.85x = 10,639.58 × 4,173.05
  4. Step 4: Simplify right side
    7,709.85x = 44,399,536.35
  5. Step 5: Solve for x
    x = 44,399,536.35/7,709.85
  6. Step 6: Final answer
    x = 5,758.81

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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.