Home / 8,630.84-12,935.72-3,690.05

Finding the Fourth Proportional to 8,630.84, 12,935.72 and 3,690.05

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Solution

The fourth proportional to 8,630.84, 12,935.72 and 3,690.05 is: 5,530.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.84 : 12,935.72 = 3,690.05 : x
  2. Step 2: Convert to fraction form
    8,630.84/12,935.72 = 3,690.05/x
  3. Step 3: Cross multiply
    8,630.84x = 12,935.72 × 3,690.05
  4. Step 4: Simplify right side
    8,630.84x = 47,733,370.46
  5. Step 5: Solve for x
    x = 47,733,370.46/8,630.84
  6. Step 6: Final answer
    x = 5,530.56

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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.