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Finding the Fourth Proportional to 8,730.84, 12,045 and 5,372.64

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Solution

The fourth proportional to 8,730.84, 12,045 and 5,372.64 is: 7,412.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,730.84 : 12,045 = 5,372.64 : x
  2. Step 2: Convert to fraction form
    8,730.84/12,045 = 5,372.64/x
  3. Step 3: Cross multiply
    8,730.84x = 12,045 × 5,372.64
  4. Step 4: Simplify right side
    8,730.84x = 64,713,448.80
  5. Step 5: Solve for x
    x = 64,713,448.80/8,730.84
  6. Step 6: Final answer
    x = 7,412.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.