Home / 9,412.11-12,989.43-5,220.36

Finding the Fourth Proportional to 9,412.11, 12,989.43 and 5,220.36

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Solution

The fourth proportional to 9,412.11, 12,989.43 and 5,220.36 is: 7,204.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.11 : 12,989.43 = 5,220.36 : x
  2. Step 2: Convert to fraction form
    9,412.11/12,989.43 = 5,220.36/x
  3. Step 3: Cross multiply
    9,412.11x = 12,989.43 × 5,220.36
  4. Step 4: Simplify right side
    9,412.11x = 67,809,500.79
  5. Step 5: Solve for x
    x = 67,809,500.79/9,412.11
  6. Step 6: Final answer
    x = 7,204.50

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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.