Home / 5,009.28-7,513.36-1,311.88

Finding the Fourth Proportional to 5,009.28, 7,513.36 and 1,311.88

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Solution

The fourth proportional to 5,009.28, 7,513.36 and 1,311.88 is: 1,967.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.28 : 7,513.36 = 1,311.88 : x
  2. Step 2: Convert to fraction form
    5,009.28/7,513.36 = 1,311.88/x
  3. Step 3: Cross multiply
    5,009.28x = 7,513.36 × 1,311.88
  4. Step 4: Simplify right side
    5,009.28x = 9,856,626.72
  5. Step 5: Solve for x
    x = 9,856,626.72/5,009.28
  6. Step 6: Final answer
    x = 1,967.67

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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.