Home / 9,412.49-12,989.41-5,163.77

Finding the Fourth Proportional to 9,412.49, 12,989.41 and 5,163.77

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Solution

The fourth proportional to 9,412.49, 12,989.41 and 5,163.77 is: 7,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.49 : 12,989.41 = 5,163.77 : x
  2. Step 2: Convert to fraction form
    9,412.49/12,989.41 = 5,163.77/x
  3. Step 3: Cross multiply
    9,412.49x = 12,989.41 × 5,163.77
  4. Step 4: Simplify right side
    9,412.49x = 67,074,247.82
  5. Step 5: Solve for x
    x = 67,074,247.82/9,412.49
  6. Step 6: Final answer
    x = 7,126.09

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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.