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Finding the Fourth Proportional to 8,666.79, 13,001.87 and 3,329.58

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Solution

The fourth proportional to 8,666.79, 13,001.87 and 3,329.58 is: 4,995.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.79 : 13,001.87 = 3,329.58 : x
  2. Step 2: Convert to fraction form
    8,666.79/13,001.87 = 3,329.58/x
  3. Step 3: Cross multiply
    8,666.79x = 13,001.87 × 3,329.58
  4. Step 4: Simplify right side
    8,666.79x = 43,290,696.85
  5. Step 5: Solve for x
    x = 43,290,696.85/8,666.79
  6. Step 6: Final answer
    x = 4,995.01

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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.