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Finding the Fourth Proportional to 8,813.10, 13,219.56 and 2,657.10

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Solution

The fourth proportional to 8,813.10, 13,219.56 and 2,657.10 is: 3,985.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.10 : 13,219.56 = 2,657.10 : x
  2. Step 2: Convert to fraction form
    8,813.10/13,219.56 = 2,657.10/x
  3. Step 3: Cross multiply
    8,813.10x = 13,219.56 × 2,657.10
  4. Step 4: Simplify right side
    8,813.10x = 35,125,692.88
  5. Step 5: Solve for x
    x = 35,125,692.88/8,813.10
  6. Step 6: Final answer
    x = 3,985.62

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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.