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Finding the Fourth Proportional to 8,666.58, 11,966.99 and 5,485.04

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Solution

The fourth proportional to 8,666.58, 11,966.99 and 5,485.04 is: 7,573.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.58 : 11,966.99 = 5,485.04 : x
  2. Step 2: Convert to fraction form
    8,666.58/11,966.99 = 5,485.04/x
  3. Step 3: Cross multiply
    8,666.58x = 11,966.99 × 5,485.04
  4. Step 4: Simplify right side
    8,666.58x = 65,639,331.57
  5. Step 5: Solve for x
    x = 65,639,331.57/8,666.58
  6. Step 6: Final answer
    x = 7,573.84

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1.5x scale

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.