Home / 7,529.83-10,390.85-4,172.78

Finding the Fourth Proportional to 7,529.83, 10,390.85 and 4,172.78

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Solution

The fourth proportional to 7,529.83, 10,390.85 and 4,172.78 is: 5,758.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,529.83 : 10,390.85 = 4,172.78 : x
  2. Step 2: Convert to fraction form
    7,529.83/10,390.85 = 4,172.78/x
  3. Step 3: Cross multiply
    7,529.83x = 10,390.85 × 4,172.78
  4. Step 4: Simplify right side
    7,529.83x = 43,358,751.82
  5. Step 5: Solve for x
    x = 43,358,751.82/7,529.83
  6. Step 6: Final answer
    x = 5,758.27

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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.