Home / 6,168.90-8,511.30-3,811.80

Finding the Fourth Proportional to 6,168.90, 8,511.30 and 3,811.80

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Solution

The fourth proportional to 6,168.90, 8,511.30 and 3,811.80 is: 5,259.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,168.90 : 8,511.30 = 3,811.80 : x
  2. Step 2: Convert to fraction form
    6,168.90/8,511.30 = 3,811.80/x
  3. Step 3: Cross multiply
    6,168.90x = 8,511.30 × 3,811.80
  4. Step 4: Simplify right side
    6,168.90x = 32,443,373.34
  5. Step 5: Solve for x
    x = 32,443,373.34/6,168.90
  6. Step 6: Final answer
    x = 5,259.18

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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.