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Finding the Fourth Proportional to 8,715.84, 13,083.12 and 3,525.12

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Solution

The fourth proportional to 8,715.84, 13,083.12 and 3,525.12 is: 5,291.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.84 : 13,083.12 = 3,525.12 : x
  2. Step 2: Convert to fraction form
    8,715.84/13,083.12 = 3,525.12/x
  3. Step 3: Cross multiply
    8,715.84x = 13,083.12 × 3,525.12
  4. Step 4: Simplify right side
    8,715.84x = 46,119,567.97
  5. Step 5: Solve for x
    x = 46,119,567.97/8,715.84
  6. Step 6: Final answer
    x = 5,291.47

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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.