Home / 8,205.36-12,305.45-2,657.42

Finding the Fourth Proportional to 8,205.36, 12,305.45 and 2,657.42

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Solution

The fourth proportional to 8,205.36, 12,305.45 and 2,657.42 is: 3,985.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205.36 : 12,305.45 = 2,657.42 : x
  2. Step 2: Convert to fraction form
    8,205.36/12,305.45 = 2,657.42/x
  3. Step 3: Cross multiply
    8,205.36x = 12,305.45 × 2,657.42
  4. Step 4: Simplify right side
    8,205.36x = 32,700,687.41
  5. Step 5: Solve for x
    x = 32,700,687.41/8,205.36
  6. Step 6: Final answer
    x = 3,985.29

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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.