Home / 8,817.12-13,208.34-5,111.55

Finding the Fourth Proportional to 8,817.12, 13,208.34 and 5,111.55

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Solution

The fourth proportional to 8,817.12, 13,208.34 and 5,111.55 is: 7,657.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.12 : 13,208.34 = 5,111.55 : x
  2. Step 2: Convert to fraction form
    8,817.12/13,208.34 = 5,111.55/x
  3. Step 3: Cross multiply
    8,817.12x = 13,208.34 × 5,111.55
  4. Step 4: Simplify right side
    8,817.12x = 67,515,109.50
  5. Step 5: Solve for x
    x = 67,515,109.50/8,817.12
  6. Step 6: Final answer
    x = 7,657.27

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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.