Home / 5,176.45-7,143.51-2,818.60

Finding the Fourth Proportional to 5,176.45, 7,143.51 and 2,818.60

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Solution

The fourth proportional to 5,176.45, 7,143.51 and 2,818.60 is: 3,889.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.45 : 7,143.51 = 2,818.60 : x
  2. Step 2: Convert to fraction form
    5,176.45/7,143.51 = 2,818.60/x
  3. Step 3: Cross multiply
    5,176.45x = 7,143.51 × 2,818.60
  4. Step 4: Simplify right side
    5,176.45x = 20,134,697.29
  5. Step 5: Solve for x
    x = 20,134,697.29/5,176.45
  6. Step 6: Final answer
    x = 3,889.67

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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.