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Finding the Fourth Proportional to 8,907.90, 13,358.09 and 2,668.80

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Solution

The fourth proportional to 8,907.90, 13,358.09 and 2,668.80 is: 4,002.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.90 : 13,358.09 = 2,668.80 : x
  2. Step 2: Convert to fraction form
    8,907.90/13,358.09 = 2,668.80/x
  3. Step 3: Cross multiply
    8,907.90x = 13,358.09 × 2,668.80
  4. Step 4: Simplify right side
    8,907.90x = 35,650,044.71
  5. Step 5: Solve for x
    x = 35,650,044.71/8,907.90
  6. Step 6: Final answer
    x = 4,002.07

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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.