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Finding the Fourth Proportional to 7,536.70, 10,400.20 and 4,179.30

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Solution

The fourth proportional to 7,536.70, 10,400.20 and 4,179.30 is: 5,767.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,536.70 : 10,400.20 = 4,179.30 : x
  2. Step 2: Convert to fraction form
    7,536.70/10,400.20 = 4,179.30/x
  3. Step 3: Cross multiply
    7,536.70x = 10,400.20 × 4,179.30
  4. Step 4: Simplify right side
    7,536.70x = 43,465,555.86
  5. Step 5: Solve for x
    x = 43,465,555.86/7,536.70
  6. Step 6: Final answer
    x = 5,767.19

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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.