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Finding the Fourth Proportional to 6,662.79, 10,039.28 and 5,518.67

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Solution

The fourth proportional to 6,662.79, 10,039.28 and 5,518.67 is: 8,315.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,662.79 : 10,039.28 = 5,518.67 : x
  2. Step 2: Convert to fraction form
    6,662.79/10,039.28 = 5,518.67/x
  3. Step 3: Cross multiply
    6,662.79x = 10,039.28 × 5,518.67
  4. Step 4: Simplify right side
    6,662.79x = 55,403,395.57
  5. Step 5: Solve for x
    x = 55,403,395.57/6,662.79
  6. Step 6: Final answer
    x = 8,315.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.