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Finding the Fourth Proportional to 8,802.90, 13,209.15 and 3,609.30

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Solution

The fourth proportional to 8,802.90, 13,209.15 and 3,609.30 is: 5,415.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,802.90 : 13,209.15 = 3,609.30 : x
  2. Step 2: Convert to fraction form
    8,802.90/13,209.15 = 3,609.30/x
  3. Step 3: Cross multiply
    8,802.90x = 13,209.15 × 3,609.30
  4. Step 4: Simplify right side
    8,802.90x = 47,675,785.10
  5. Step 5: Solve for x
    x = 47,675,785.10/8,802.90
  6. Step 6: Final answer
    x = 5,415.92

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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.