Home / 7,988.76-11,031.39-6,676.56

Finding the Fourth Proportional to 7,988.76, 11,031.39 and 6,676.56

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Solution

The fourth proportional to 7,988.76, 11,031.39 and 6,676.56 is: 9,219.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.76 : 11,031.39 = 6,676.56 : x
  2. Step 2: Convert to fraction form
    7,988.76/11,031.39 = 6,676.56/x
  3. Step 3: Cross multiply
    7,988.76x = 11,031.39 × 6,676.56
  4. Step 4: Simplify right side
    7,988.76x = 73,651,737.22
  5. Step 5: Solve for x
    x = 73,651,737.22/7,988.76
  6. Step 6: Final answer
    x = 9,219.42

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Double scale
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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.