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Finding the Fourth Proportional to 9,408.02, 12,980.44 and 7,412.39

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Solution

The fourth proportional to 9,408.02, 12,980.44 and 7,412.39 is: 10,227.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.02 : 12,980.44 = 7,412.39 : x
  2. Step 2: Convert to fraction form
    9,408.02/12,980.44 = 7,412.39/x
  3. Step 3: Cross multiply
    9,408.02x = 12,980.44 × 7,412.39
  4. Step 4: Simplify right side
    9,408.02x = 96,216,083.65
  5. Step 5: Solve for x
    x = 96,216,083.65/9,408.02
  6. Step 6: Final answer
    x = 10,227.03

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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.