Home / 7,529.75-10,390.64-4,172.51

Finding the Fourth Proportional to 7,529.75, 10,390.64 and 4,172.51

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Solution

The fourth proportional to 7,529.75, 10,390.64 and 4,172.51 is: 5,757.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,529.75 : 10,390.64 = 4,172.51 : x
  2. Step 2: Convert to fraction form
    7,529.75/10,390.64 = 4,172.51/x
  3. Step 3: Cross multiply
    7,529.75x = 10,390.64 × 4,172.51
  4. Step 4: Simplify right side
    7,529.75x = 43,354,976.49
  5. Step 5: Solve for x
    x = 43,354,976.49/7,529.75
  6. Step 6: Final answer
    x = 5,757.83

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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.