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Finding the Fourth Proportional to 8,673.40, 11,966.09 and 5,690.89

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Solution

The fourth proportional to 8,673.40, 11,966.09 and 5,690.89 is: 7,851.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.40 : 11,966.09 = 5,690.89 : x
  2. Step 2: Convert to fraction form
    8,673.40/11,966.09 = 5,690.89/x
  3. Step 3: Cross multiply
    8,673.40x = 11,966.09 × 5,690.89
  4. Step 4: Simplify right side
    8,673.40x = 68,097,701.92
  5. Step 5: Solve for x
    x = 68,097,701.92/8,673.40
  6. Step 6: Final answer
    x = 7,851.33

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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.