Home / 7,529.40-10,390.68-4,172.22

Finding the Fourth Proportional to 7,529.40, 10,390.68 and 4,172.22

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Solution

The fourth proportional to 7,529.40, 10,390.68 and 4,172.22 is: 5,757.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,529.40 : 10,390.68 = 4,172.22 : x
  2. Step 2: Convert to fraction form
    7,529.40/10,390.68 = 4,172.22/x
  3. Step 3: Cross multiply
    7,529.40x = 10,390.68 × 4,172.22
  4. Step 4: Simplify right side
    7,529.40x = 43,352,202.91
  5. Step 5: Solve for x
    x = 43,352,202.91/7,529.40
  6. Step 6: Final answer
    x = 5,757.72

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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.