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Finding the Fourth Proportional to 8,417.42, 12,621.94 and 4,908.64

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Solution

The fourth proportional to 8,417.42, 12,621.94 and 4,908.64 is: 7,360.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.42 : 12,621.94 = 4,908.64 : x
  2. Step 2: Convert to fraction form
    8,417.42/12,621.94 = 4,908.64/x
  3. Step 3: Cross multiply
    8,417.42x = 12,621.94 × 4,908.64
  4. Step 4: Simplify right side
    8,417.42x = 61,956,559.56
  5. Step 5: Solve for x
    x = 61,956,559.56/8,417.42
  6. Step 6: Final answer
    x = 7,360.52

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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.