Home / 7,731.96-10,678.98-5,091.18

Finding the Fourth Proportional to 7,731.96, 10,678.98 and 5,091.18

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Solution

The fourth proportional to 7,731.96, 10,678.98 and 5,091.18 is: 7,031.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,731.96 : 10,678.98 = 5,091.18 : x
  2. Step 2: Convert to fraction form
    7,731.96/10,678.98 = 5,091.18/x
  3. Step 3: Cross multiply
    7,731.96x = 10,678.98 × 5,091.18
  4. Step 4: Simplify right side
    7,731.96x = 54,368,609.40
  5. Step 5: Solve for x
    x = 54,368,609.40/7,731.96
  6. Step 6: Final answer
    x = 7,031.67

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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.