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Finding the Fourth Proportional to 8,658.32, 12,984.76 and 2,416.72

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Solution

The fourth proportional to 8,658.32, 12,984.76 and 2,416.72 is: 3,624.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.32 : 12,984.76 = 2,416.72 : x
  2. Step 2: Convert to fraction form
    8,658.32/12,984.76 = 2,416.72/x
  3. Step 3: Cross multiply
    8,658.32x = 12,984.76 × 2,416.72
  4. Step 4: Simplify right side
    8,658.32x = 31,380,529.19
  5. Step 5: Solve for x
    x = 31,380,529.19/8,658.32
  6. Step 6: Final answer
    x = 3,624.32

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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.