Home / 9,408.28-12,989.55-6,423.03

Finding the Fourth Proportional to 9,408.28, 12,989.55 and 6,423.03

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Solution

The fourth proportional to 9,408.28, 12,989.55 and 6,423.03 is: 8,867.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.28 : 12,989.55 = 6,423.03 : x
  2. Step 2: Convert to fraction form
    9,408.28/12,989.55 = 6,423.03/x
  3. Step 3: Cross multiply
    9,408.28x = 12,989.55 × 6,423.03
  4. Step 4: Simplify right side
    9,408.28x = 83,432,204.39
  5. Step 5: Solve for x
    x = 83,432,204.39/9,408.28
  6. Step 6: Final answer
    x = 8,867.96

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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.