Home / 5,127.67-7,691.39-1,429.80

Finding the Fourth Proportional to 5,127.67, 7,691.39 and 1,429.80

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Solution

The fourth proportional to 5,127.67, 7,691.39 and 1,429.80 is: 2,144.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.67 : 7,691.39 = 1,429.80 : x
  2. Step 2: Convert to fraction form
    5,127.67/7,691.39 = 1,429.80/x
  3. Step 3: Cross multiply
    5,127.67x = 7,691.39 × 1,429.80
  4. Step 4: Simplify right side
    5,127.67x = 10,997,153.00
  5. Step 5: Solve for x
    x = 10,997,153.00/5,127.67
  6. Step 6: Final answer
    x = 2,144.67

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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.