Home / 8,170.20-11,272.50-4,811.40

Finding the Fourth Proportional to 8,170.20, 11,272.50 and 4,811.40

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Solution

The fourth proportional to 8,170.20, 11,272.50 and 4,811.40 is: 6,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,170.20 : 11,272.50 = 4,811.40 : x
  2. Step 2: Convert to fraction form
    8,170.20/11,272.50 = 4,811.40/x
  3. Step 3: Cross multiply
    8,170.20x = 11,272.50 × 4,811.40
  4. Step 4: Simplify right side
    8,170.20x = 54,236,506.50
  5. Step 5: Solve for x
    x = 54,236,506.50/8,170.20
  6. Step 6: Final answer
    x = 6,638.33

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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.