Home / 9,408.27-12,984.79-5,428.60

Finding the Fourth Proportional to 9,408.27, 12,984.79 and 5,428.60

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Solution

The fourth proportional to 9,408.27, 12,984.79 and 5,428.60 is: 7,492.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.27 : 12,984.79 = 5,428.60 : x
  2. Step 2: Convert to fraction form
    9,408.27/12,984.79 = 5,428.60/x
  3. Step 3: Cross multiply
    9,408.27x = 12,984.79 × 5,428.60
  4. Step 4: Simplify right side
    9,408.27x = 70,489,230.99
  5. Step 5: Solve for x
    x = 70,489,230.99/9,408.27
  6. Step 6: Final answer
    x = 7,492.26

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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.