Home / 7,117.91-10,676.87-1,923.78

Finding the Fourth Proportional to 7,117.91, 10,676.87 and 1,923.78

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Solution

The fourth proportional to 7,117.91, 10,676.87 and 1,923.78 is: 2,885.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.91 : 10,676.87 = 1,923.78 : x
  2. Step 2: Convert to fraction form
    7,117.91/10,676.87 = 1,923.78/x
  3. Step 3: Cross multiply
    7,117.91x = 10,676.87 × 1,923.78
  4. Step 4: Simplify right side
    7,117.91x = 20,539,948.97
  5. Step 5: Solve for x
    x = 20,539,948.97/7,117.91
  6. Step 6: Final answer
    x = 2,885.67

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Similar ratio
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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.