Home / 9,122.28-13,688.89-3,279.35

Finding the Fourth Proportional to 9,122.28, 13,688.89 and 3,279.35

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Solution

The fourth proportional to 9,122.28, 13,688.89 and 3,279.35 is: 4,920.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.28 : 13,688.89 = 3,279.35 : x
  2. Step 2: Convert to fraction form
    9,122.28/13,688.89 = 3,279.35/x
  3. Step 3: Cross multiply
    9,122.28x = 13,688.89 × 3,279.35
  4. Step 4: Simplify right side
    9,122.28x = 44,890,661.42
  5. Step 5: Solve for x
    x = 44,890,661.42/9,122.28
  6. Step 6: Final answer
    x = 4,920.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.