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Finding the Fourth Proportional to 8,626.64, 12,930.72 and 4,462.46

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Solution

The fourth proportional to 8,626.64, 12,930.72 and 4,462.46 is: 6,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.64 : 12,930.72 = 4,462.46 : x
  2. Step 2: Convert to fraction form
    8,626.64/12,930.72 = 4,462.46/x
  3. Step 3: Cross multiply
    8,626.64x = 12,930.72 × 4,462.46
  4. Step 4: Simplify right side
    8,626.64x = 57,702,756.12
  5. Step 5: Solve for x
    x = 57,702,756.12/8,626.64
  6. Step 6: Final answer
    x = 6,688.91

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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.