Home / 8,423.70-11,620.08-5,235.96

Finding the Fourth Proportional to 8,423.70, 11,620.08 and 5,235.96

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Solution

The fourth proportional to 8,423.70, 11,620.08 and 5,235.96 is: 7,222.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.70 : 11,620.08 = 5,235.96 : x
  2. Step 2: Convert to fraction form
    8,423.70/11,620.08 = 5,235.96/x
  3. Step 3: Cross multiply
    8,423.70x = 11,620.08 × 5,235.96
  4. Step 4: Simplify right side
    8,423.70x = 60,842,274.08
  5. Step 5: Solve for x
    x = 60,842,274.08/8,423.70
  6. Step 6: Final answer
    x = 7,222.75

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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.