Home / 5,270.12-7,271.86-3,031.72

Finding the Fourth Proportional to 5,270.12, 7,271.86 and 3,031.72

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Solution

The fourth proportional to 5,270.12, 7,271.86 and 3,031.72 is: 4,183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,270.12 : 7,271.86 = 3,031.72 : x
  2. Step 2: Convert to fraction form
    5,270.12/7,271.86 = 3,031.72/x
  3. Step 3: Cross multiply
    5,270.12x = 7,271.86 × 3,031.72
  4. Step 4: Simplify right side
    5,270.12x = 22,046,243.40
  5. Step 5: Solve for x
    x = 22,046,243.40/5,270.12
  6. Step 6: Final answer
    x = 4,183.25

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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.